Legal basis: provisions on some issues of evidence in civil proceedings.
Article 68 Evidence obtained by infringing upon the lawful rights and interests of others or violating the prohibitive provisions of laws cannot be used as the basis for ascertaining the facts of a case.
Article 69 The following evidence cannot be used alone as the basis for determining the facts of a case:
(1) Testimonies made by minors that are not commensurate with their age and intellectual status;
(2) Testimony issued by a witness who has an interest in the party concerned or his agent;
(3) audio-visual materials with doubts;
(four) copies and reproductions that cannot be checked with the original and the original;
(5) Testimony of witnesses who fail to testify in court without justifiable reasons.