Legal analysis: count the evidence, and let the insider testify as a witness. According to relevant laws and regulations, evidence must be verified before it can be used as the basis for ascertaining facts. The types of evidence include witness's physical evidence and witness's testimony. Whether the testimony is valid depends on whether neighbors and parties have an interest, and whether their testimony is true, legal and relevant.

Legal basis: Article 63 of the Civil Procedure Law of People's Republic of China (PRC). Evidence includes: (1) statements of the parties; (2) Documentary evidence; (3) Physical evidence; (4) Audio-visual materials; (5) Electronic data; (6) Testimony of witnesses; (7) Appraisal opinions; (8) Records of the inquest. Evidence must be verified before it can be used as a basis for ascertaining facts.