[9] On March 27, 2018, Sun Mengya won the silver medal in the women's 200-meter single rowing event at the National Canoe Flat Water Spring Championships.

[11] On May 27, in the women's double rowing 500-meter event at the German Canoe World Cup, Sun Mengya and her teammate Ma Yanan won the runner-up; in the women's single rowing 500-meter event, Sun Mengya won the third place.

[13] On August 30, in the women's 500-meter double canoe final of the Jakarta Asian Games, Sun Mengya and teammate Ma Yanan won the championship.

[14] On August 31, in the women's single 200-meter canoeing event at the Jakarta Asian Games, Sun Mengya finished third with a time of 51.309 seconds.

[18] On August 6, local time, the 2022 Canoeing (Standwater) World Championships continued in Halifax, Canada.