Hong Kong pop star Leon Lai (left) attends a public service announcement in this photo released on Tuesday, July 1, 2008. [Photo: sina.com.cn]

Chinese actress Zhou Xun and Hong Kong pop star Leon Lai attended a public service announcement (PSA) for the psychological recovery of disabled and poor children.

The PSA "I Do", shot by China Charity Federation, will soon be broadcast on China Central Television, a report by Chinese famous online portal sina.com said on Tuesday.

As a goodwill ambassador for the United Nations Children's Fund, Lai hoped to attract more attention and help for children affected by the May 12 earthquake.

Zhou, a national goodwill ambassador for the United Nations Development Program, also wishes to encourage more people to participate in charity activities through her efforts.

Both the stars wrote down "I Do" on the proposal of the PSA to show their devotion for charity affairs.