I have to. According to the announcement issued by Zibo Municipal People's Government, professional and technical personnel should participate in continuing education in accordance with the regulations, and participate in continuing education for no less than 90 hours every year, including no less than 30 hours for public demand subjects and no less than 60 hours for professional subjects. Zibo, located in the east of North China Plain in China and the middle of Shandong Province, is a unique cluster city.