Xiao won gold medals on the pommel horse and the horizontal bar at the2015 São Paulo World Cup.[3] He then competed at theAsian Championships inHiroshima and helped the Chinese team win silver behind Japan.[4] Individually, he won a silver medal on the pommel horse behindKazuma Kaya.[5] He was then selected to compete at theWorld Championships inGlasgow alongsideDeng Shudi,Lin Chaopan,Liu Yang,You Hao, andZhang Chenglong. The team won the bronze medal behind Japan and Great Britain after Xiao fell off the pommel horse.[6] This marked the first time since 2003 that the Chinese team did not win the gold medal at the World Championships.[7] Xiao qualified for the individual all-around final, where he finished in ninth place.[8]
Xiao injured his elbow during training and was unable to compete in the2016 Olympic Games. He considered retirement due to the injury but decided to continue competing.[1][7]
Xiao returned to competition and won the gold medal on the horizontal bar at theDoha World Cup, and he won a silver medal on the pommel horse behindKrisztián Berki.[9] He then competed at theAsian Championships inBangkok and led his team to the gold medal.[10] He also won the gold medal in the all-around and on the pommel horse, and he won silver medals on the floor exercise and horizontal bar.[11][12] He then competed at theWorld Championships inMontreal and won the all-around title.[13] He became the first Chinese gymnast to win a major all-around title sinceYang Wei won at the2008 Summer Olympics.[14] He also won a bronze medal in the pommel horse final behindMax Whitlock andDavid Belyavskiy.[15]
Xiao won a silver medal on the parallel bars at theDoha World Cup behind teammateZou Jingyuan.[16] He then competed at theChinese Championships and won the all-around title by over two points ahead ofSun Wei. He also won a bronze medal with his provincial team and on the horizontal bar.[17] He representedChina at the 2018 Asian Games alongside Zou, Sun,Deng Shudi, andLin Chaopan, and they won the team title.[18] Individually, he won the all-around bronze medal behind Lin andShogo Nonomura after falling off the pommel horse.[19] Then in the event finals, he won a silver medal on the parallel bars and a bronze medal on the horizontal bar.[20]
Xiao was selected to compete at theWorld Championships inDoha with the same team that competed at the Asian Games. The team finished second to Russia in the qualification round due to multiple falls on the pommel horse, and Xiao qualified in first place for the all-around final.[21] The team defeated Russia by only 0.049 in the team final to win China's first World team gold medal since 2014.[22] In the all-around final Xiao andArtur Dalaloyan tied with the highest score of 87.598. However, the tie-breaker procedure of counting the five highest apparatus scores resulted in Dalaloyan winning the gold medal.[23] Then in the pommel horse final, he tied withMax Whitlock for the highest score, but Xiao won the highest execution score tie-breaker.[24]
Xiao finished seventh on the floor exercise at the2019 Doha World Cup.[25] Then at theChinese Championships, he won the gold medal on the floor exercise and the silver medal on the pommel horse.[26] He then competed at theWorld Championships inStuttgart alongsideDeng Shudi,Lin Chaopan,Sun Wei, andZou Jingyuan. The team trailed Russia in the qualification round, and Xiao qualified third into the all-around final behind RussiansNikita Nagornyy andArtur Dalaloyan.[27] The Chinese team won the silver medal in the team final by one point behind Russia.[28] In the all-around final, Xiao fell off the horizontal bar, resulting in a fourth-place finish by 0.283 behind the bronze medalist.[29] He then won a bronze medal in the floor exercise final behindCarlos Yulo andArtem Dolgopyat.[30]
Xiao won the all-around title at theChinese Championships, and he placed seventh on the floor exercise and fourth on the pommel horse.[34] He was one of the 12 men selected for the Olympic training squad.[35] At the Olympic Trials, he did not compete in the all-around, but he posted the highest score on the floor exercise and the second-highest score on the vault.[36] He was selected to representChina at the 2020 Summer Olympics alongsideLin Chaopan,Sun Wei, andZou Jingyuan.[37][38] The team qualified for theteam final in second place behind Japan, and Xiao qualified for the all-around in third place.[39] The team then won the bronze medal in the final behind theRussian Olympic Committee and Japan.[40] Then in theall-around final, he won the silver medal by 0.400 behind Japan'sDaiki Hashimoto.[41] Some Chinese fans questioned the results, specifically Hashimoto's vault score, and attacked Hashimoto on social media. TheInternational Gymnastics Federation released a statement explaining the score and confirming the results.[42] He then won a bronze medal in thefloor exercise final behindArtem Dolgopyat andRayderley Zapata.[43]
Xiao competed on the floor exercise and horizontal bar at theDoha World Cup but did not qualify for either event final.[47] Then at the Chinese Championships, he finished fifth in the all-around.[48] He then competed at theAsian Games inHangzhou alongsideLan Xingyu,Zou Jingyuan,Lin Chaopan, andZhang Boheng, and they won the team title ahead of Japan.[49] Individually, Xiao placed seventh in the pommel horse final.[50] Because the Asian Games took place around the same time as theWorld Championships, Xiao did not compete at Worlds.[51]
Xiao began the Olympic season at theBaku World Cup, finishing sixth on the horizontal bar.[52] Then at the Chinese Championships, he won the silver medal in the all-around and bronze medals on the floor exercise and horizontal bar.[53] He was selected to compete at theChina at the 2024 Summer Olympics alongsideLiu Yang,Su Weide,Zhang Boheng, andZou Jingyuan. The team qualified first for the team final, and Xiao qualified in fourth place for the all-around and horizontal bar finals.[54] However, in theteam final, multiple falls caused the team to win the silver medal behind Japan.[55] Then in theall-around final, he won the bronze medal behind Japan'sShinnosuke Oka and teammate Zhang.[56]
^"中国体操队男12女14最新奥运集训大名单公布" [China's gymnastics team announces 12 men and 14 women for the latest Olympic training].Sohu (in Chinese). 9 May 2021. Retrieved7 August 2024.
^Lu, Yuchen; Shen, Nan; Niu, Mengtong (3 July 2021)."步步为赢——中国体操队东京奥运会大名单诞生记" [Step-by-step to win – the creation of the Chinese gymnastics squad for the Tokyo Olympics].Xinhua (in Chinese).