Photo taken on Sept. 8, 2021 shows a model of China's self-developed new high-speed maglev transportation system, with a designed top speed of 600 km per hour during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

A visitor views In-Vehicle Space Suit during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province, Sept. 8, 2021. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

Photo taken on Sept. 8, 2021 shows an ambulance with 5G technology equipment during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

Photo taken on Sept. 8, 2021 shows models of jets during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

A visitor tries an intelligent massaging robot during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province, Sept. 8, 2021. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

Photo taken on Sept. 8, 2021 shows an intelligent robot dog during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

Visitors view Long March carrier rocket models during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province, Sept. 8, 2021. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)

Visitors tour the booth of Chinese drone maker DJI during an exhibition on BRICS New Industrial Revolution held in Xiamen, southeast China's Fujian Province, Sept. 8, 2021. An exhibition on BRICS New Industrial Revolution kicked off in Xiamen, a port city in southeast China's Fujian Province on Wednesday. The exhibition covers an area of 10,000 square meters. BRICS is the acronym for an emerging-market bloc that groups Brazil, Russia, India, China and South Africa. (Photo: Xinhua)