Singer Li Yugang performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

The band "Super Girls" performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

Singer Jing Chang performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

People gather to watch performance during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

Members of the Shin Band perform during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

Singer Joey Yung performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

The 19-year-old instrumentalist Li Gaoyang performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

The band "Super Girls" performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

Singer Li Yugang performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)

The musical group "An and Knight" performs during the May 4 Youth Day Music Festival in Hong Kong, south China, May 4, 2013. (Xinhua/Li Peng)