During Episode 3 of Girls Planet 999, Cai Bing asked the staff if she could stay late and practice her performance of "How You Like That." Korean isn't her first language and she wanted to practice her rap part.
Her hobbies are skating, go-kart racing, and bungee jumping.
She was a backup dancer and took part in demo choreographies for multiple C-pop and K-pop stars like Rocket Girls 101, THE9, BonBonGirls 303, Meng Meiqi, Will Pan, and Miss A’s Fei.
On her birthday in 2021, she revealed that she legally changed her name to Cai Yubing and that she would be using it while promoting in the future.