What are the rules and sources of reimbursement for business trips of deputy senior positions?

The question "What working level people can travel by plane" is old. In the past, people above the division level generally had the right to fly, and they didn't have to fly, just had the "right" to sit. Now you can fly as long as you have money, even beggars. Of course, there are some internal financial regulations specific to a unit. Generally speaking, for large enterprises, the level of directors can be unrestricted. If necessary, section chiefs and clerks can also fly with the approval of the director, and ordinary workers can also fly with the approval of the leaders. In short, there is basically no level limit at present. As long as the leader agrees, pigs and dogs can fly.