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At the latest competition, Yang received a special gift from a member of the organizing committee. The Italian, at his 50s, said he had watched a performance by the choir 21 years ago. He made a photo album, with a handwritten message in Italian and Chinese on the cover, showing his respect for Yang.

At the CIIE, a ping-pong robot training system -- one of the achievements from the R&D collaboration, involving a robot to serve the ball, a vision system and intelligent training -- was exhibited.

At the very event, the Japanese carmaker that started its business by making weaving looms adopted the beat-them or join-them strategy by announcing an alliance that includes members like Mazda, Amazon and China's ride-hailing giant Didi Chuxing.

At the showcase were large hardware products such as motorcycles, bicycles, yachts, a motor home, and the THAAD missile system. There were also smaller gadgets such as lighters, pens and bottle openers. One company was chosen from every state as a representative.

At present, China's crude stainless steel output ranks first in the world, accounting for more than half of the global market, according to the forum.