Liu Yuchen is a Chinese badminton player. He was the men's doubles World Champion in 2018, two-time Asian Champion in 2017 and 2018, and also a silver medalist at the 2020 Summer Olympics partnered with Li Junhui. Liu was part of the national team that won the 2018 Asian Games, 2018 Thomas Cup, and 2019 Sudirman Cup. Together with Li, he achieved the men's doubles world number 1 in 6 April 2017, and occupied the top ranking for ten weeks.

The 2018 BWF World Championships was a badminton tournament which was held from 30 July to 5 August at Nanjing Youth Olympic Games Sports Park Arena in Nanjing, China.