Why did the "World Skills Olympics" fall into Shanghai, China?

China News Agency, Shanghai, October 14 Xinhua (reporter Xu Jing) Abu Dhabi local time 13 days, the world skills group president Simon Bartlett formally announced at the 2017 world conference organization skills, Chinese Shanghai's successful bid for the 2021 forty-sixth session of the world skills competition. 4 years later, young talent from all over the world will show a stunt in Shanghai".