It takes five years for a teacher's professional title to be promoted from level six to level five, and some conditions such as papers, topics or honors must be attached to the promotion to level one.
There are five levels of teachers' professional titles, from full senior professional titles to ranks, which are full senior teachers, senior teachers, first-class teachers, second-class teachers and third-class teachers in turn, corresponding to full senior, deputy senior, intermediate, assistant and rank.