Liu Yunnuo
Liu
Liu
Liu Yajin
Liu zhuoqiong
Liu Yiwen
Liu
Liu
Liu
Liu tingrong
Liu Yatian
Liu Xiaomei
Liu
Liu jiafei
Liu Xiaoying
Liu wenru
Yuhan Liu
Liu
Liu
Liu
Liu
Preparation, demonstration, practice and follow-up evaluation.
Four-step training
I. Preparatory work
1, review the waiter workstation traini