He participated in social movements and some illegal protests, including in the 2014 Hong Kong protests, a 79-day-long protest against the Beijing government's restrictions on the electoral method of choosing the Chief Executive of Hong Kong. He was one of the core members, along with the Occupy Central trio, Benny Tai, Chan Kin-man and Chu Yiu-ming. He voluntarily reported to police after the trio and Cardinal Joseph Zen had done the same, towards the end of the Occupy event in early December 2014.