Candidates' voluntary lock-in time is set by each admissions institution independently, and the longest time is no more than 36 hours.

Lock-in of volunteer adjustment refers to the lock-in of volunteer adjustment after colleges and universities find candidates who meet the re-examination conditions in the adjustment system, so that colleges and universities can decide whether to accept candidates to participate in the re-examination according to the adjustment work of their own units. If the admissions institution refuses the candidate's re-examination, it can unlock the candidate's volunteer adjustment at the same time, or the system will automatically unlock it after the lock time arrives, and the candidate can continue to fill in other volunteers.

Precautions for adjustment:

1. Transfer does not mean that candidates can transfer to any school they want. Candidates can choose from last year's transfer schools. It is suggested that more schools be selected before the official transfer schools are announced this year.

2. After choosing a better school, candidates are advised to check the lowest transfer score of the school last year to judge the possibility of successful transfer this year and improve the success rate of transfer.

3. Candidates can fill in the pre-adjustment system or not, but the advantage of filling in advance is that after the formal adjustment system is opened, candidates can change the selected school from the pre-adjustment system to the formal adjustment system with one click.

4. It should be noted that some school transfer information or places have not been announced in the pre-transfer, so one-click jump should be cautious.

5. After the official swap platform is opened, you can fill in three parallel swap volunteers. However, if these three schools refuse candidates to apply or automatically unlock, candidates can still choose other schools to fill in the form, and the whole transfer is not limited by the amount.

6. After the transfer platform is opened, not all schools can apply in the first time. Candidates should pay attention to the opening time of the transfer platform of the transfer intention school in time to avoid missing or filling in information by mistake.