香港特別行政区基本法
He became the member of the 12th Central Committee of the Communist Party of China from 1982 to 1987. In 1988, he became the vice-chairman of the National Committee of the 7th Chinese People's Political Consultative Conference. He served for the second term and retired from office in 1998. He was also vice chairman of the Hong Kong Basic Law Drafting Committee which was responsible for drafting the Hong Kong Basic Law, the constitution of the Hong Kong Special Administrative Region after it was handed over to China 1997.