Question: ArrayWhat do data trajectories and editing trajectories refer to, and the difference between them and audit trajectories? (GCP No. 57 of 2020, Article 36 (5)) @ @ The audit trail includes the entry, editing, and modification trajectories of all data. The Chinese GCP and ICH GCP are consistent, with a special emphasis on data trajectory and editing trajectory, aiming to emphasize that there should be no hard deletion, that is, permanent deletion of data without any traces of data entry.