On March 7, Liu Liehong, chairman of China Unicom Group, went to the national alpine skiing center in Yanqing competition area of the Winter Olympics to express condolences to the front-line communication team and inspect relevant work. At the national alpine skiing center venue, Liu Liehong learned about the communication support of the Winter Olympics in detail, had in-depth exchanges with the front-line communication team, and listened to the front-line communication team talk about the ar...