[1][2][3] Lu drew media attention when she reached a rating of 2200 shortly after turning 10 years old by finishing in ninth place in the Liberec Open in the Czech Republic and winning the 52nd Belgrade International Women's Grandmaster Chess Tournament with a performance rating near 2400.

[1][2] Lu earned her first Woman Grandmaster (WGM) norm in the Serbian Women's League in November 2022 by defeating Lilit Mkrtchian, an International Master (IM), in an 18-move miniature.

[4][5] She scored her remaining WGM norms in 2023, and was awarded the title of Woman Grandmaster towards the end of the year.

With this result, she entered the women's top 50 and reached a published rating of 2400, both for the first time.

[7][8] In May, Lu entered the Chinese Women's Championship as the top seed and won the title in a blitz playoff against Ni Shiqun.