 Many in China believe that kung fu masters have supernatural powers, and self-described masters, including Wei Lei, were known to make such claims online.Xu started a dispute with Wei on social media, beginning with a demand that Wei provide evidence of his abilities, and culminating in a bare-knuckle fight in a basement in Chengdu in 2017; Xu won convincingly in less than 20 seconds.After the fight went viral, there was significant blowback on social media where he was accused of disparaging Chinese culture and his family received death threats.