An automatic aircraft based on 5G technology is displayed in a 5G technology exhibition in Hangzhou, east China's Zhejiang Province, Jan. 19, 2019. (Xinhua/Xu Yu)

A staff demonstrates a smart sport platform based on 5G technology during a 5G technology exhibition in Hangzhou, east China's Zhejiang Province, Jan. 19, 2019. (Xinhua/Xu Yu)

A 5G technology exhibition is held in Hangzhou, east China's Zhejiang Province, Jan. 19, 2019. (Xinhua/Xu Yu)

A man tries a remote medical emergency rescue system based on 5G technology during a 5G technology exhibition in Hangzhou, east China's Zhejiang Province, Jan. 19, 2019. (Xinhua/Xu Yu)

A man operates a remote medical emergency rescue system based on 5G technology during a 5G technology exhibition in Hangzhou, east China's Zhejiang Province, Jan. 19, 2019. (Xinhua/Xu Yu)