[7] She represented South Korea at the team event in the 2020 Summer Olympics.

[8] A Jiangsu native, Choi (then known as Yao Yao) attended a table tennis school in Qingdao, Shandong at a young age.

[9] In 2009, she finished 8th in the national cadet tournament, behind the likes of Chen Meng, Gu Yuting, Shao Jieni, and Zhu Yuling.

[10] She was spotted by Choi Young-il, head coach of the Korean club Samsung Life, who persuaded her to go to South Korea and acquire Korean nationality.

Several people helped out with her naturalization: the mother of Jeong Sang-eun, another Chinese-born South Korean player, and Coach Choi's older brother, a public employee, who volunteered to foster her.