Journalists work at the Media Center of China International Import Expo (CIIE) in Shanghai,east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Han Yuqing)

A journalist gets coffee from a cafe served by robotic arms at the Media Center of China International Import Expo (CIIE) in Shanghai, east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Liu Dawei)

Journalists look up information at the Media Center of China International Import Expo (CIIE) in Shanghai, east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Li Xin)

Journalists work at the Media Center of China International Import Expo (CIIE) in Shanghai, east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Lan Hongguang)

Journalists work at the Media Center of China International Import Expo (CIIE) in Shanghai,east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Liu Dawei)

Journalists take photos of a cafe served by robotic arms at the Media Center of China International Import Expo (CIIE) in Shanghai,east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Chen Jianli)

Journalists watch paper-cutting presentation at the Media Center of China International Import Expo (CIIE) in Shanghai,east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Lan Hongguang)

Journalists interact with a guiding robot at the Media Center of China International Import Expo (CIIE) in Shanghai, east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Chen Jianli)

Journalists are seen at the Media Center of China International Import Expo (CIIE) in Shanghai,east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Chen Jianli)

A trouper performs Kunqu opera at the Media Center of China International Import Expo (CIIE) in Shanghai, east China, Nov. 4, 2018. The media center of the expo opened to journalists on Sunday. (Xinhua/Han Yuqing)