[2] In January 2023, at the Guangzhou Snooker Championship, Jiang Jun finished as runner up to champion Ma Hai Long in the final.

[4] In April 2023 he won a two-year card on the World Snooker Tour at the first CBSA qualifying tournament, defeating Chen Feilong, Long Zehuang and Luo Zetao, before beating Liu Hongyu 4-2 in the final.

[5] Jun made his professional debut in a draw at the 2023 Championship League held at the Morningside Arena in Leicester, England from 26 June 2023.

Aged seventeen years-old, in his opening match in the round-robin phase he earned a credible 2-2 draw with top-16 ranked Welshman Ryan Day and later recorded his first pro-win, against Himanshu Jain.

[15] He made back-to-back centuries to defeat former World Champion Luca Brecel and qualify for the latter stages of the 2024 International Championship.