10分鐘BLNST 基本法及香港國安法測試 10min BLNST — Basic Law & NSL Test Ten minutes a day, six years in the making
HK National Security Law 第20–23條

Offences I: Secession and Subversion

The first four articles of Chapter III of the NSL define two core offences — secession (Article 20) and subversion (Article 22) — each paired with an incitement/assistance offence (Articles 21 and 23). Penalties are tiered into three levels based on the role of the offender.

1 Secession — Article 20

Any person who organises, plans, commits or participates in any of the following acts aimed at seceding or undermining national unification is guilty of an offence, whether or not force or threat of force is used.

Three Categories of Secessionist Acts

第20條
  • Act 1: Separating the HKSAR or any other part of the PRC from the PRC. Definition
  • Act 2: Altering by unlawful means the legal status of the HKSAR or any other part of the PRC. Definition
  • Act 3: Surrendering the HKSAR or any other part of the PRC to a foreign country. Definition
  • Key feature: Article 20 expressly states "whether or not by force or threat of force" — no force is needed for conviction, unlike the subversion offence in Article 22. Trap
  • All three acts require the intent to commit secession or undermine national unification. Exam

高頻考點

The "whether or not by force" phrase is unique to Article 20. Article 22 requires force, threat of force, or other unlawful means — this contrast is a top MC trap.

易混淆

Article 20 lists 3 acts; Article 22 lists 4 acts. Exam questions have appeared as "select all" with all three Art 20 acts as the correct answer.

常見陷阱

Real exam questions have tested the trap claim that force is required for secession — the answer is false: Article 20 expressly states force is NOT required.

How it is examined

Which of the following are acts listed under Article 20 (secession) — regardless of whether force is used?

  • All three are correct: (i) separating HK from PRC; (ii) altering HK's legal status unlawfully; (iii) surrendering HK to foreign rule
  • All require intent to commit secession or undermine national unification
  • No force required — "whether or not by force or threat of force" (unique to Art 20)
  • Any one of the three acts is sufficient for the offence

Which statement about the secession offence (Art 20) is FALSE?

  • False: "Force or threat of force is required for secession" — Art 20 expressly states force is NOT required
  • True: Any one of the three acts suffices (separation, altering legal status, foreign rule)
  • True: The key distinction vs subversion (Art 22) is the means requirement
  • True: Subversion (Art 22) requires force, threat of force, or other unlawful means

Three-tier Sentencing for Secession

第20條
  • Principal offenders or those whose offences are of a serious nature: life imprisonment or fixed-term imprisonment of 10 years or more. Numbers
  • Active participants: fixed-term imprisonment of 3 to 10 years. Numbers
  • Other participants: fixed-term imprisonment of up to 3 years, short-term detention or restriction. Numbers
  • Memory aid — Tier 1 (principal/serious): life or 10+ years; Tier 2 (active): 3–10 years; Tier 3 (other): up to 3 years. Exam

必背數字

Articles 20 and 22 share identical three-tier sentencing — memorise one set for both offences.

高頻考點

"Life imprisonment" (無期徒刑) equals "终身監禁" in HK (Art 64); 管制 corresponds to community service orders or probation. This equivalence has appeared in real exam questions.

Three-tier Sentencing (Principal Offence)

第20條
Role / gravity Penalty
Principal / serious offenceLife or 10+ years
Active participant3 to 10 years
Other participantUp to 3 years, detention or restriction

Articles 20 (secession) and 22 (subversion) share this identical three-tier sentencing.

How it is examined

What is the sentence for actively participating in the secession offence?

  • Active participant: 3 to 10 years imprisonment
  • Principal/serious offender: life or 10+ years
  • Other participant: up to 3 years, detention or restriction
  • Identical tier structure applies to the subversion offence (Art 22)

Under the NSL (Art 64), what does "無期徒刑" (life imprisonment) correspond to in HK?

  • 無期徒刑 = 終身監禁 (life/indefinite imprisonment)
  • 有期徒刑 = 監禁 (fixed-term imprisonment)
  • 拘役 = 監禁 / 勞役中心 / 教導所
  • 管制 = community service order / probation / care centre
  • This Art 64 equivalence table has appeared in real exam questions

2 Incitement/Assistance for Secession — Article 21

Any person who incites, assists, abets, or provides money or other financial assistance for others to commit the Article 20 offence is guilty, with a two-tier penalty depending on seriousness.

Article 21 — Elements and Sentencing

第21條
  • Offending acts: inciting, assisting, abetting others, or providing money or other property to others to commit the Article 20 offence. Definition
  • If circumstances are of a serious nature: fixed-term imprisonment of 5 to 10 years. Numbers
  • If circumstances are of a minor nature: fixed-term imprisonment of up to 5 years, short-term detention or restriction. Numbers
  • Articles 21 and 23 share identical two-tier sentencing: serious = 5–10 years; minor = up to 5 years. Compare
  • Note: Incitement/assistance offences (Arts 21, 23) use a two-tier structure, not the three-tier structure of the principal offences. Trap

必背數字

Incitement/assistance offences (Arts 21/23): max 10 years, serious starts at 5 years. Principal offences (Arts 20/22): life imprisonment possible — the ceilings differ.

真題考法

Real exam question filled in the blank in Art 21: "Any person who incites, assists, _____ commits the Art 20 offence" — answer: "abets, or provides money or other property to others". Both elements must be included.

How it is examined

Fill in the blank: "Any person who incites, assists, _____ commits the Art 20 offence is guilty."

  • Correct: "abets, or provides money or other property to others"
  • Full text: incites, assists, abets, or provides money or other property to others
  • Both "abets" and "provides money/property" must be included — neither alone suffices
  • This exact wording from Art 21 is a real exam test point

Under Article 21 NSL, what is the sentence for seriously financing a secession offence?

  • Serious circumstances: 5 to 10 years imprisonment
  • Minor circumstances: up to 5 years, detention or restriction
  • Covers inciting, assisting, abetting, and money/property assistance
  • Same sentencing structure applies to Art 23 (assistance for subversion)

3 Subversion of State Power — Article 22

Any person who organises, plans, commits or participates in any of the following acts by force, threat of force, or other unlawful means, with a view to subverting State power, is guilty of an offence.

Four Categories of Subversion Acts

第22條
  • Act 1: Overthrowing or undermining the basic system of the PRC established by the PRC Constitution. Definition
  • Act 2: Overthrowing the central authorities of the PRC or the political power of the HKSAR. Definition
  • Act 3: Seriously interfering with, disrupting or undermining the performance of duties and functions in accordance with the law by the central authorities of the PRC or the HKSAR government. Definition
  • Act 4: Attacking or damaging the premises and facilities used by the HKSAR government in performing its duties so as to render it incapable of performing its normal duties. Definition
  • Key element: Article 22 requires force, threat of force, OR other unlawful means — unlike Article 20 which applies regardless of whether force is used. Trap
  • Article 22 lists 4 acts; Article 20 lists 3 acts — note the different count. Compare

高頻考點

"Other unlawful means" broadens Art 22 beyond physical force, but lawful acts cannot qualify — this is a common exam angle.

易混淆

Four acts: (1) constitutional system, (2) central/HK government power, (3) interfering with functions, (4) attacking premises — the fourth is the most concrete. Real exams test "which qualifies": public criticism of government policy does NOT constitute subversion.

How it is examined

What acts constitute subversion of State power under Article 22 NSL?

  • Four acts: (1) overthrowing/undermining PRC constitutional system
  • (2) overthrowing central/HKSAR government
  • (3) seriously interfering with lawful performance of duties
  • (4) attacking premises/facilities of the HKSAR government causing inability to perform normal functions
  • Must be committed by force, threat of force, or other unlawful means

How do Articles 20 and 22 differ in terms of required means?

  • Article 20 (secession): offence committed whether or not force is used
  • Article 22 (subversion): must involve force, threat of force, or other unlawful means
  • This is the most frequently tested contrast between the two offences
  • Art 20 has 3 acts; Art 22 has 4 acts

Which acts constitute subversion (Art 22) if carried out by force or unlawful means? (i) overthrowing the constitutional system; (ii) interfering with government functions; (iii) criticising government policy online; (iv) attacking government premises

  • Correct: (i)(ii)(iv) — all correspond to three of the four Art 22 acts
  • Incorrect: (iii) public online criticism is lawful speech, not "unlawful means" — does not constitute subversion
  • Subversion requires force, threat of force, or other unlawful means — lawful acts cannot qualify
  • The four Art 22 acts also include overthrowing central/HKSAR political power (not listed here)

Three-tier Sentencing for Subversion

第22條
  • Principal offenders or those whose offences are of a serious nature: life imprisonment or 10 years or more. Numbers
  • Active participants: fixed-term imprisonment of 3 to 10 years. Numbers
  • Other participants: fixed-term imprisonment of up to 3 years, short-term detention or restriction. Numbers
  • The three-tier sentencing of Article 22 is identical to Article 20: principal/serious = life or 10+ years; active = 3–10 years; other = up to 3 years. Exam

必背數字

Arts 20 and 22 share identical three-tier sentencing. Arts 21 and 23 (assistance) use a two-tier structure with a lower ceiling of 10 years.

How it is examined

What is the maximum sentence for a principal offender under Article 22 NSL?

  • Principal offender or serious offence: life imprisonment or 10+ years
  • Active participant: 3 to 10 years
  • Other participant: up to 3 years, detention or restriction
  • Identical three-tier structure as Article 20 (secession)

4 Incitement/Assistance for Subversion (Art 23) & Comparison

Article 23 mirrors Article 21 for the subversion offence. This section also consolidates the key differences between Articles 20 and 22 for exam preparation.

Article 23 — Elements and Sentencing

第23條
  • Offending acts: inciting, assisting, abetting others, or providing money or other property to others to commit the Article 22 subversion offence. Definition
  • Serious circumstances: fixed-term imprisonment of 5 to 10 years. Numbers
  • Minor circumstances: fixed-term imprisonment of up to 5 years, short-term detention or restriction. Numbers
  • Article 23 and Article 21 carry identical two-tier sentences: serious = 5–10 years; minor = up to 5 years. Compare

高頻考點

Arts 21 and 23 carry identical sentences: serious = 5–10 years, minor = up to 5 years. An exam may directly test whether the two assistance offences carry the same penalties (answer: yes).

How it is examined

Under Article 23 NSL, what is the penalty for inciting subversion in minor circumstances?

  • Minor circumstances: up to 5 years, short-term detention or restriction
  • Serious circumstances: 5 to 10 years imprisonment
  • Identical structure to Art 21 (incitement for secession)
  • Maximum for assistance offences (10 years) is lower than principal offences (life)

Key Comparison: Article 20 vs Article 22

第20–22條
  • Means requirement — Art 20: offence committed "whether or not by force or threat of force"; Art 22: force, threat of force, or other unlawful means REQUIRED. This is the most important distinction. Compare
  • Number of acts — Art 20: 3 acts; Art 22: 4 acts. Compare
  • Sentencing structure — identical for both: principal/serious = life or 10+ years; active = 3–10 years; other = up to 3 years. Compare
  • Assistance offences — Arts 21 and 23 carry identical two-tier penalties: serious = 5–10 years; minor = up to 5 years. Compare
  • Target — secession targets national unification/territorial integrity; subversion targets State power and governmental functions. Definition

常見失分位

The "force not required vs force required" contrast is the single most tested point across Arts 20–22. One sentence covers two potential MC questions.

必背數字

Four numbers to memorise: 3 acts (Art 20), 4 acts (Art 22), three sentencing tiers (life/10+, 3–10, up to 3), two assistance tiers (5–10, up to 5).

Secession vs Subversion

第20–22條
Item Secession (Art 20) Subversion (Art 22)
Means requiredWhether or not by force or threat of forceForce, threat of force, or other unlawful means required
No. of acts3 acts4 acts
TargetNational unificationState power
Three-tier penaltyLife/10+ → 3–10 → up to 3 yearsIdentical to Art 20
Assistance offenceArt 21Art 23

"Force optional vs force/unlawful means required" is the single most-tested contrast.

Penalty Summary — Articles 20–23

第20–23條
Article Offence Penalty
Art 20Secession (principal)Three tiers: life/10+ → 3–10 → up to 3
Art 21Assistance for secessionTwo tiers: 5–10 (serious) / up to 5 (minor)
Art 22Subversion (principal)Three tiers: life/10+ → 3–10 → up to 3
Art 23Assistance for subversionTwo tiers: 5–10 (serious) / up to 5 (minor)

Principal offences: three tiers, up to life. Assistance offences: two tiers, capped at 10 years.

How it is examined

Which statement correctly describes Articles 20 and 22 of the NSL?

  • Secession (Art 20) requires no force; subversion (Art 22) requires force or other unlawful means
  • Both offences carry identical three-tier sentencing (life/10+, 3–10, up to 3 years)
  • Art 20 has 3 acts; Art 22 has 4 acts
  • Both have corresponding assistance offences (Arts 21, 23) with a 10-year maximum

How do the sentencing structures of principal offences vs assistance offences differ under Arts 20–23 NSL?

  • Principal offences (Arts 20/22): three tiers — principal/serious = life or 10+ years; active = 3–10; other = up to 3
  • Assistance offences (Arts 21/23): two tiers — serious = 5–10 years; minor = up to 5 years
  • Principal offences allow life imprisonment; assistance offences cap at 10 years
  • Exam questions often mix up the sentencing figures across the four articles

Which statement about the secession offence and related Arts 20–21 is CORRECT?

  • Correct: altering HK's legal status unlawfully constitutes Art 20 even without force
  • Correct: Art 21 serious offence carries up to 10 years — lower than Art 20 principal offender's life sentence
  • False: "Force is required for Art 20" — Art 20 expressly states force is NOT required
  • False: "Art 21 sentences are identical to Art 20 principal offenders" — the sentencing ranges clearly differ

Practise with 683 exam-style questions

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