Legal basis: Criminal Procedure Law of People's Republic of China (PRC).
Article 61 The testimony of a witness must be cross-examined and verified by the public prosecutor, the victim, the defendant and the defender in court before it can be used as the basis for finalizing the case. If the court finds that a witness intentionally perjures or conceals criminal evidence, it shall deal with it according to law.
Article 125 When questioning a witness, the witness shall be informed of the legal responsibilities that he shall truthfully provide evidence and testimony and intentionally commit perjury or conceal criminal evidence.
Article 194 When a witness testifies, the judge shall inform him of the legal responsibilities he should bear for truthfully providing testimony and intentionally perjury or concealing criminal evidence. Public prosecutors, parties, defenders and agents ad litem may, with the permission of the presiding judge, put questions to witnesses and expert witnesses. When the presiding judge thinks that the content of the question is irrelevant to the case, he shall stop it. A judge may question witnesses and expert witnesses.
Article 307 of the Criminal Law of People's Republic of China (PRC) shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention if a witness is prevented from testifying or instructed to commit perjury by means of violence, threats or bribery; If the circumstances are serious, they shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years. Whoever helps a party destroy or forge evidence, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention. Any judicial officer who commits the crimes mentioned in the preceding two paragraphs shall be given a heavier punishment. Article 307-1 Whoever brings a civil lawsuit with fabricated facts, impairing the judicial order or seriously infringing upon the legitimate rights and interests of others, shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance and shall also, or shall only, be fined; If the circumstances are serious, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years and shall also be fined. If a unit commits the crime mentioned in the preceding paragraph, it shall be fined, and the directly responsible person in charge and other directly responsible personnel shall be punished in accordance with the provisions of the preceding paragraph. Whoever commits the act mentioned in the first paragraph, illegally occupies other people's property or evades legal debts, which constitutes other crimes, shall be convicted and given a heavier punishment in accordance with the provisions on heavier punishment. Judicial personnel who use their powers to collude with others to commit the acts mentioned in the preceding three paragraphs shall be given a heavier punishment; If it constitutes other crimes at the same time, it shall be convicted and given a heavier punishment in accordance with the provisions on heavier punishment.
Article 111 of the Civil Procedure Law of People's Republic of China (PRC), if a litigant participant or other person commits one of the following acts, the people's court may impose a fine or detention according to the seriousness of the case; If the case constitutes a crime, criminal responsibility shall be investigated according to law: (1) forging or destroying important evidence, which hinders the people's court from hearing the case; (2) using violence, threats or bribes to prevent witnesses from testifying or instigating, bribing or coercing others to commit perjury; (3) Hiding, transferring, selling off or destroying the property that has been sealed up or detained, or transferring the property that has been counted and ordered to be kept; (4) Insulting, slandering, framing, beating or retaliating against judicial personnel, participants in litigation, witnesses, translators, expert witnesses, inspectors and assisting executors; (5) Obstructing judicial personnel from performing their duties by violence, threat or other means; (6) Refusing to perform a legally effective judgment or ruling of the people's court. The people's court may impose a fine or detention on a unit that commits one of the acts listed in the preceding paragraph; If a crime is constituted, criminal responsibility shall be investigated according to law.