Tik Tok。 According to the query of "Tik Tok”app, Tangdi has settled in Tik Tok account, and his name is Tangdi. There are many videos of applied knowledge to learn. Application is an examination subject to test the basic ability that an applicant should have in office work. It mainly tests the applicant's reading comprehension ability, comprehensive analysis ability, ability to ask and solve problems, execution ability and writing expression ability. It can simulate the daily work of civil servants.