Business people are also very particular about how to address others. When meeting female clients in business, young people can call them beautiful women, and middle-aged women can call them Sister Why (surname+Qian) to treat female clients. Remember not to call elder sister or elder sister, which is impolite. For male customers, young people can be called handsome guys, middle-aged men can be called Why Zong (front+surname), and unit staff can directly call Why Bureau (front+surname). Remember not to call the male customer Lao Zi.