March 1925, 1 1, when Sun Yat-sen died, he signed three wills. Today, people in China often say that "the revolution is not successful, but comrades still have to work hard", which comes from the political will left by Sun Yat-sen to the people of China. On the same day, he entrusted He Xiangning to "treat Mrs. Sun (Soong Ching Ling) well" and "despise her because she has no property". He Xiangning replied: "Sir, I have been close to my husband for more than 20 years, sharing weal and woe. If anything happens to him, we should try our best to protect his wife and family. Although my knowledge and ability are weak, I can finally get personal instruction from the Prime Minister's Three People's Principles. I have a strength and will try my best to publicize it. " In the past, Sun Yat-sen repeatedly put off signing his will. At this time, with the help of Soong Ching Ling, he signed three will documents.