Wu Yongning had amassed thousands of followers on the social network Weibo for his dramatic short videos showing him perched atop tall buildings without the use of safety equipment.
Concern grew among his fans when he stopped posting updates in November.
It has now emerged that he died after falling from a 62-storey building in the city of Changsha.
Chinese media report that he was participating in a challenge to win a substantial amount of prize money.
