After 1644 when Qing conqueror marched through Shanhai pass into Beijing, and order requiring all males to shave the heads and keep long queues was issued, then appeared the trade of hair-shaving.

• 1644年清朝胜利者通过山海关进入北京后，命令所有男子必须剃发留辫。这项法令使理发业产生。