"Second Construction" is a professional qualification of architecture and a necessary condition for being a project manager. Those who have passed the qualification examination of "second-class constructor" shall be awarded "People's Republic of China (PRC) (PRC) second-class constructor qualification certificate" by the personnel departments of provinces, autonomous regions and municipalities directly under the Central Government.

After obtaining the qualification certificate of construction engineer and registration, and obtaining the second-class construction engineer registration certificate, you can hire a registered construction engineer to practice. Erjian began to implement territorial management and territorial proposition system in 2009. There are three exam subjects. The qualification of second-level construction engineers shall be subject to a unified national outline, and the provinces, autonomous regions and municipalities directly under the Central Government shall propose and organize examinations.

Classification: builders are divided into first-class builders and second-class builders.