According to the Supreme People's Court's explanation on the application of the Civil Procedure Law of People's Republic of China (PRC):

Article 342 Litigation Acts made by the parties in the procedure of first instance shall still be binding on the parties in the procedure of second instance.

When the people's court overturns the litigant behavior of the parties in the procedure of first instance, it shall order the parties to explain the reasons. If the reason is untenable, it will not be supported.

3. The investigation record of administrative law enforcement cases is of great significance for finding out the facts of the case and investigating and dealing with administrative violations accurately, timely and legally. If the investigation record made by the administrative law enforcement organs before making the decision on administrative punishment is not standardized, once administrative litigation is triggered, it may lead to losing the case. In reality, the irregularities in making investigation records by administrative law enforcement personnel are mainly reflected in the following aspects: first, the process of law enforcement personnel showing their identity is not recorded in the records; Second, the respondents were not informed of the scope or matters of the investigation; Third, the end of the transcript should be signed by the investigator and the recorder respectively according to law, but it is often signed by the recorder; Fourth, it is not written in accordance with the unified and standardized investigation record format; Fifth, because the basic facts are not clearly described, the content does not meet the specific requirements of the law; Sixth, due to improper questioning, the transcript is suspected of giving directions, inducing confessions, and so on. The author believes that in order to ensure the legality, comprehensiveness, concreteness, accuracy, objectivity and effectiveness of case investigation, the following aspects should be paid attention to when making investigation transcripts: First, the basic purpose should be clarified when making investigation transcripts. Everything has a certain purpose, so does the administrative law enforcement organs making investigation records. The ultimate goal of this is to find out the illegal facts and give the parties involved corresponding punishment according to law. Therefore, before making a specific investigation record, the administrative law enforcement personnel must first make clear whether the object of the record is the party or the witness, why they want to find this person and who to find to investigate and verify.