I felt the all-round appearance of the office space of important government institutions in the Ming and Qing eras in the northern Sichuan Dao Department of the ancient city of Langzhong. Going to the North Sichuan Dao Department to take a look, it is like a meaningful "study tour", can let tourists deeply learn the details of the ancient official system, the North Sichuan Dao Department is not only an ancient "Daotai Anus", but also let tourists see the "special" attractions.