After her husband died in 417, Lady Yin was honored as princess dowager. She was described as wise and full of composure, and she tried in vain to stop her son Li Xin from attacking rival
Northern Liang in 420—an attack that was induced by a trap set by Northern Liang's prince
Juqu Mengxun. She pointed out that a small country such as theirs should first strive to become strong and they would not be able to defeat as strong a state as that of Juqu Mengxun. Li Xin was defeated and killed by Juqu Mengxun, and Western Liang's capital Jiuquan (酒泉, in modern
Jiuquan,
Gansu) fell. Princess Dowager Yin was captured, but she maintained her dignity and did not plead with Juqu Mengxun for her life or mourn her son's death. Juqu Mengxun praised her and had his son
Juqu Mujian marry her daughter
Li Jingshou. After Juqu Mujian succeeded Juqu Mengxun in 433, Lady Li became princess, but in 437, Juqu Mujian was forced to divorce her and marry
Northern Wei's
Princess Wuwei, sister to Northern Wei's
Emperor Taiwu. Princess Li died soon thereafter, and after Princess Li's death, Princess Dowager Yin had been sent to live in
Jiuquan. Before the commander of the garrison there, she feigned disinterest in going to Yiwu (伊吾, in modern
Hami Prefecture,
Xinjiang), where some of her grandsons had fled. dying at the age of 74. ==Notes==