No matter how long the WeChat record is, Interpol can check it. Because according to Article 137 of the Criminal Procedure Law of People's Republic of China (PRC), any unit or individual is obliged to hand over physical evidence, documentary evidence, audio-visual materials and other evidence, including WeChat records, that can prove the criminal suspect's guilt or innocence at the request of the people's procuratorate and the public security organ.
legal ground
Article 137th of the Criminal Procedure Law of People's Republic of China (PRC)
Any unit or individual has the obligation to hand over physical evidence, documentary evidence, audio-visual materials and other evidence that can prove the criminal suspect's guilt or innocence according to the requirements of the people's procuratorate and the public security organ.