Customers dine at a smart restaurant operated by China's e-commerce giant JD.com in north China's Tianjin, Nov. 10, 2018. The full process including ordering, cooking and serving of food is based on AGV (automated guided vehicle) robots and artificial intelligence (AI) technology at the smart restaurant. (Xinhua/Li Ran)

A robot cooks at a smart restaurant operated by China's e-commerce giant JD.com in north China's Tianjin, Nov. 10, 2018. The full process including ordering, cooking and serving of food is based on AGV (automated guided vehicle) robots and artificial intelligence (AI) technology at the smart restaurant. (Xinhua/Li Ran)

A robot serves food at a smart restaurant operated by China's e-commerce giant JD.com in north China's Tianjin, Nov. 10, 2018. The full process including ordering, cooking and serving of food is based on AGV (automated guided vehicle) robots and artificial intelligence (AI) technology at the smart restaurant. (Xinhua/Li Ran)

A robot serves food at a smart restaurant operated by China's e-commerce giant JD.com in north China's Tianjin, Nov. 10, 2018. The full process including ordering, cooking and serving of food is based on AGV (automated guided vehicle) robots and artificial intelligence (AI) technology at the smart restaurant. (Xinhua/Li Ran)

Photo taken on Nov. 10, 2018 shows a smart restaurant operated by China's e-commerce giant JD.com in north China's Tianjin. The full process including ordering, cooking and serving of food is based on AGV (automated guided vehicle) robots and artificial intelligence (AI) technology at the smart restaurant. (Xinhua/Li Ran)