In his 15th fight on October 3, 2017, he recorded his first stoppage win against former WBA (Regular) super bantamweight champion Nehomar Cermeño, prevailing via seventh-round corner retirement.
[1] Xu was rewarded for his twelve fight winning streak with the opportunity to challenge the reigning WBA (Regular) featherweight champion Jesús Rojas.
The bout was scheduled for the undercard of the Jaime Munguia and Takeshi Inoue WBO super-welterweight title fight, which took place at the Toyota Center in Houston, Texas, on January 26, 2019, and was broadcast by DAZN and Canal Space.
[8] Talks were held in 2020 and early 2021 to try to make Xu's third defense of his title against the IBF champion at the time, Josh Warrington.
When Xu dropped out of junior high school during his third year, he joined China's only professional boxing club at the time, named Zhongwei, in Kunming, Yunnan where he began training as a boxer.