Yin Changji was promoted to the Yanbian's first team squad in the summer of 2015. On 1 April 2017, Yin made his senior debut in a 1–0 home defeat against Guangzhou R&F as the benefit of the new rule of the Super League that at least one Under-23 player must in the starting. He was substituted off in the 27th minute.[1] He started in another three league matches against Tianjin Quanjian, Hebei China Fortune and Tianjin Teda in April, and was substituted off in the 14th, 9th and 9th minute, respectively.[2][3][4] Yin was degraded to Yanbian's reserve squad in June 2017.
On 2 March 2019, Yin transferred to China League Two side Yanbian Beiguo.[5] On February 4, 2020, Yanbian Beiguo was disqualified for 2020 China League Two due to its failure to hand in the salary and bonus confirmation form before the deadline.[6]