A look inside e-commerce giant JD.com's robot restaurant in Tianjin's Binhai New District, seen here on its first day of operation on Saturday, November 10, 2018. The robots play a central role at the 400-square-meter restaurant, as they are responsible for each step of the serving process, from taking orders to preparing and delivering the meals. [Photo: VCG]

A robot delivers a dish to a customer at JD.com's robot restaurant in Tianjin's Binhai New District. Seen here on its first day of operation on Saturday, November 10, 2018 the food delivery robot can autonomously make its way around the restaurant. It can monitor its surroundings so it doesn't run into customers or other robots. [Photo: VCG]

A robot chef prepares dishes ordered by customers at JD.com's robot restaurant in Tianjin's Binhai New District, during its first day of operation on Saturday, November 10, 2018. The robot chef can autonomously complete cooking steps such as blanching and stir frying according to the preset menu. It can make a total of 40 diverse dishes. [Photo: VCG]

Robot waiter at a robot restaurant opened by JD.com in Tianjin's Binhai New District on Saturday, November 10, 2018. The restaurant has an automated kitchen management system that can work out what ingredients it needs to order each day.