It wasn't easy for a little girl to undergo the tough training, as performances combine martial arts, dancing and acrobatics.

"Sometimes I was tired," she said. "I had to balance my school studies and some other courses I was interested in, such as dance. But I never thought about giving it up because of its great charm. It attracted me deeply."

In 2020, to prepare for the China's Little Plum Blossom Opera Competition for children, Liu would rise at 6 am to practice singing every day. She received more than 20 hours of systematic training by teachers every week.