[6][7][8] Together with Li, he achieved the men's doubles world number 1 in 6 April 2017, and occupied the top ranking for ten weeks.

[9] Partnered with Li Junhui, he won a silver medal in the men's doubles after being defeated by Lee Yang and Wang Chi-lin of Chinese Taipei in the final in straight games, 18–21, 12–21.

[5] Following the loss, he and Li received immense backlash from Chinese netizens for being unable to win the gold medal.

[11] In the Indonesia Open, the duo beat Korea's Choi Sol-gyu and Kim Won-ho to become the first men’s doubles pair from the reserves’ list to win a Super 1000 title.

[13] In 2023, Liu and Ou helped the Chinese national team reach the final round of the Sudirman Cup.

1 Jia Yifan won the deciding rubber, she stated, "We wouldn’t be here if not for the men’s doubles, they did a great job.

[21] Liu himself has acknowledged the joke in an Instagram post with Setiawan's family during the Indonesia Masters in Jakarta.

On 2 August 2024, Liu proposed to his girlfriend, fellow Chinese badminton player and 2020 Olympic silver medalist Huang Yaqiong, right after she received her gold medal at the 2024 Summer Olympics in Adidas Arena, Paris, which she accepted.