Dr. Sun Yat-sen has two grandchildren and four granddaughters. Two grandchildren are Sun Zhiping and Sun Zhiqiang. The four granddaughters are Sun Suiying, Sun Suihua, Sun Suifang and Sun Suifen. Sun Zhiqiang was born in 19 15 and studied at the University of California. After returning to Taiwan with his father, Sun Ke, in the mid-1960s, he was somewhat depressed and only worked as a consultant in the Central Trust Bureau and the National Palace Museum in Taipei. Mr Sun Zhiqiang has been married twice: the first time, he had two daughters, Sun Jialin and Sun Jiayu. They all live in America now. Later, Mr. Wang married Ms. Lin Lunke, who was 30 years younger than him, and gave birth to two sons, Sun, Sun and Sun. At the age of seventy, Mr. Sun Zhiqiang returned to the mainland twice, namely 1992 and 1993. He was cordially received by the party and state leaders, visited Beijing, Shanghai, Wuhan, Guangzhou and other places, and returned to Cuiheng Village to pay tribute to his grandfather's former residence. In the summer of 200 1 2000, Sun Zhiqiang went to the United States to attend the graduation ceremony of his youngest son, Sun Guosheng, and died of a heart attack in Los Angeles. At the age of 87