Yu, who turns 14 in October, has planned to compete in three individual events at the Asian Games in Tokyo, and the championships started in the best possible way with a crushing victory.
A year ago, she became the youngest swimmer to win a World Championships medal. At the time, she was just 12 years old and won bronze with the Chinese team in the 4x200-meter freestyle.
Ahead of the 2028 Summer Olympics in Los Angeles, the teenager is seen as one of China's big medal hopes.
Her success in swimming has also sparked discussions about how the extensive amount of training can affect her, both physically and mentally, at her young age.
What do you think?