Liu Lan's husband.

Sun Xu. Guiyang is a prefecture-level city, the provincial capital and an important central city in southwest China. According to the inquiry of Chengdu Bureau Group Co., Ltd., a pair of "husband and wife files" are fighting side by side. Both of them are party member and work in Guiyang North Station, the largest in Guizhou. Husband Sun Xu is engaged in driving, and is responsible for dispatching and commanding high-speed rail. His wife, Liu Lan, is responsible for organizing passengers to get on and off the ship.