The 2017 World Championships Masters silver medallist got off to a better start in the title match against challenger, Ernest Kwok of Hong Kong after rolling four consecutive strikes from frame two as Kwok managed only two strikes in the second and fourth frames.
The Hong Kong national opened in the fifth frame to give the Xu a 35-pin lead. Xu downed another four strikes-in-a-row to cruise to a comfortable 277-218 victory for his first-ever tour title. The 22-year-old champion reached the final after edging compatriot, Chen Kuan-Yeh, 244-241 in the all-Taiwanese semi-final.
Kwok dispatched last last year's champion, Lee Tak Man of Macau, 244-185 in the other semi-final match to face Xu in the final. Xu also eliminated another Hong Kong national and 19th Koahsiung International Open first runner-up, James Lui, 256-233 in the second round.
The champion took out another compatriot, Jake Cheng, 276-245 in his opening round. Kwok breezed past Hsieh Chin-Liang of Chinese Taipei, 267-170 in Round 1 and another Taiwanese, Wu Hao-Ming, 263-223 in Round 1.