No job. I don't go to work on Saturday and Sunday, and I can't stamp it until I go to work on Monday. The qualification certificate stamping business is handled by the Transportation Management Office of the Transportation Bureau, and the transportation department is a national civil servant. Like other units, they are public institutions and have civil servants, so they enjoy the right of national legal holidays on weekends, so they can't do anything on Saturday. Taxi qualification certificate is a kind of qualification certificate that drivers engaged in taxi business must obtain before taking up their posts.