How to tell the leader to ask for leave?

Explain the reasons for asking for leave truthfully, in order to tell him that you want to ask for leave, and you can't do it without asking; If the reason is inconvenient to disclose, then make up a reason that he can't refuse.

Work arrangement: finish the work ahead of time if possible; If you can't finish ahead of time or you have to follow up on time, find a good customer. Then discuss with the leader the work arrangement in your planned holiday and get the approval of the leader. If the leader has different opinions, refer to his opinions and adjust again.

Holiday contact: tell the leader that your wire transfer can be connected at any time during the holiday, and call the emergency contact number if necessary. Everything is for work, so please rest assured.