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, it will take 180 hours, that is, 60 hours for the public sector, 60 hours for the professional sector (the first major) and 60 hours for the professional sector (the 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.