A visitor experiences a remote medical system at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Zhou Hua)

A visitor experiences 5G remote driving at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Huang Xiaobang)

Photo taken on Sept. 13, 2018 shows bus models at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region. High-tech exhibits attracted many visitors at the expo. (Xinhua/Li Mangmang)

Visitors interact with a robot at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Lu Bo'an)

Photo taken on Sept. 13, 2018 shows a civilian drone at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region. High-tech exhibits attracted many visitors at the expo. (Xinhua/Zhang Ailin)

A boy interacts with a robot at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Zhang Ailin)

Photo taken on Sept. 13, 2018 shows a model of high-speed railway at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region. High-tech exhibits attracted many visitors at the expo. (Xinhua/Zhao Dingzhe)

A visitor looks at a meteorological radar at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Li Mangmang)

A visitor experiences virtual reality live broadcast at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Zhao Dingzhe)

A visitor experiences helicopter simulator at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 12, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Cai Yang)

Visitors watch robot dance at the 15th China-ASEAN Expo in Nanning City, south China's Guangxi Zhuang Autonomous Region, Sept. 13, 2018. High-tech exhibits attracted many visitors at the expo. (Xinhua/Zhou Hua)