A competitor processes wood during the national selection match of the 45th Worldskills Competition in Shanghai, east China, June 13, 2018. About 900 competitors of 46 representative teams from across China will take part in the national selection match here. (Xinhua/Fang Zhe)

A competitor's work is appraised by referee during the national selection match of the 45th Worldskills Competition in Shanghai, east China, June 13, 2018. About 900 competitors of 46 representative teams from across China will take part in the national selection match here. (Xinhua/Fang Zhe)

A referee appraises the vehicle maintenance work performed by a competitor during the national selection match of the 45th Worldskills Competition in Shanghai, east China, June 13, 2018. About 900 competitors of 46 representative teams from across China will take part in the national selection match here. (Xinhua/Fang Zhe)

A competitor shows eyelash planting during the national selection match of the 45th Worldskills Competition in Shanghai, east China, June 13, 2018. About 900 competitors of 46 representative teams from across China will take part in the national selection match here. (Xinhua/Fang Zhe)

A competitor shows cutting wood during the national selection match of the 45th Worldskills Competition in Shanghai, east China, June 13, 2018. About 900 competitors of 46 representative teams from across China will take part in the national selection match here. (Xinhua/Fang Zhe)

A competitor tightens screw during the national selection match of the 45th Worldskills Competition in Shanghai, east China, June 13, 2018. About 900 competitors of 46 representative teams from across China will take part in the national selection match here. (Xinhua/Fang Zhe)