1. How to arrange the continuing education of additional professional secondary builders may vary from place to place. Zhejiang, for example, is to train together, that is, to increase the hours of additional projects. If additional items are not included, the continuing education is 120 hours, including 60 hours in the public sector and 60 hours in the professional sector; If there are additional items, you need 180 class hours, that is, 60 class hours for the public part, 60 class hours for the professional part (first major) and 60 class hours for the professional part (second major). 2. The same registration certificate, no matter how many supplements, is the proof of the hours required for continuing education every three years. Generally speaking, all attachments are also completed at one time through continuous continuing education.