Sun Shangxiang is the sister of Sun Quan and Sun Ce.
Mrs. Sun, named Sun Shangxiang, was born in Fuchun, Wu County (now Fuyang, Hangzhou, Zhejiang). She was the sister of Sun Quan, the general who fought against the captives in the late Eastern Han Dynasty, and was once the wife of Liu Bei, the general of the left. "Three Kingdoms" calls her Mrs. Sun.
In order to consolidate the alliance between Sun and Liu, Mrs. Sun married Liu Bei for three years, and later returned to Wu. Her subsequent deeds are unknown. There are no birth records in historical materials. Sandwiched between the two countries, she has a rebellious personality that is completely different from traditional women.
After the Battle of Chibi, Sun Quan’s sister was married to Liu Bei. Mrs. Sun was smart and strong, just like her brothers from the same clan. She was surrounded by more than a hundred maids, all of whom were guarding her with swords. Even people like Liu Bei feel scared every time they enter the inner room. For this reason, Fazheng persuaded Liu Bei to keep a distance from Mrs. Sun.
Extended information:
In the novel, Mrs. Sun's life experience is generally consistent with the official history. She is the sister of Sun Quan. She married Liu Bei after Red Cliff and was later taken back to Soochow. However, the details are different from that of Sun Quan. The endings are often different.
In the "Three Kingdoms Zhi Ping Hua", which is known as the ancestor of "The Romance of the Three Kingdoms", Zhou Yu wrote to Sun Quan and taught him a "beauty trick", marrying Quan's sister to Liu Bei as Mrs. Sun, intending to let Mrs. Sun assassinate Liu Bei. However, Mrs. Sun saw the miracle, so she gave up the assassination plan of Soochow and helped Liu Bei return.
Later Liu Bei entered Shu, Sun Quan sent a boat to welcome Madam Sun, who took Liu Chan back to Wu. Fortunately, Zhao Yun and Zhang Fei intercepted the river and recaptured Liu Chan. He was insulted by Zhang Fei, so he threw himself into the river in shame and died.
Baidu Encyclopedia-Sun Shangxiang