Not less than 360 hours. According to the Measures for the Administration of the Recognition and Registration of Teacher Training Hours in Jiangsu Province, in order to implement the Outline of the Medium-and Long-term Development Plan of Education in Jiangsu Province, improve teachers' professional quality and professional level, and cultivate high-quality professional teachers, these measures are formulated in accordance with the Teachers Law, the Regulations of the Ministry of Education on Continuing Education for Primary and Secondary School Teachers and the Regulations of Jiangsu Province on Continuing Education for Professional and Technical Personnel. Article 7 Teachers' training takes five years as a cycle, with a cumulative period of not less than 360 hours, of which the training hours at or above the county level are not less than 180 hours. Teachers of specialized courses in secondary vocational schools have accumulated no less than five months' internship in enterprises every five years, and 50 hours count as 1 month.