Photo taken on Nov. 20, 2019 shows Huawei's exhibition booth during a press preview for the 2019 World 5G Convention in Beijing, capital of China. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Li Xin)

 

A visitor looks at an indoor delivery robot during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Ren Chao)

 

Photo taken on Nov. 20, 2019 shows the venue for the 2019 World 5G Convention during a press preview in Beijing, capital of China. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Ren Chao)

 

An exhibitor tests a device during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Chen Zhonghao)

 

An exhibitor tests a wearable bionic hand during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Ren Chao)

 

A Huawei Atlas 800 AI server is on display during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Peng Ziyang)

 

An exhibitor shows a security robot during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Ren Chao)

 

Exhibitors display 5G-powered technologies during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Li Xin)

 

A visitor joins an AR (augmented reality) concert during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Peng Ziyang)

 

Two robotic arms play the piano during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Chen Zhonghao)

 

A Huawei Atlas 800 AI server is on display during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Peng Ziyang)

 

A visitor tries a 5G-powered game during a press preview for the 2019 World 5G Convention in Beijing, capital of China, Nov. 20, 2019. The 2019 World 5G Convention will open on Nov. 21. (Xinhua/Peng Ziyang)