7- 15 days. According to the pre-job training regulations of Dongguan teachers, it takes 7- 15 days to prepare for the pre-job training of teachers. Establishing emotional connection with the company, colleagues and their own work is an important content of new employee training. Dongguan, referred to as "Dongguan" for short, is a prefecture-level city and megacity under the jurisdiction of Guangdong Province, and the central city on the east coast of the Pearl River Delta as determined by the State Council.