There is a story about the song "Liang Zhu". What's the story?

Butterfly Lovers is a beautiful, sad and touching love story. In the Eastern Jin Dynasty, in Zhujiazhuang, Shangyu County, Zhejiang Province, there was a beautiful and intelligent Mrs. Nv Ying who studied poetry with her brother since childhood, admired the talents of Ban Zhao and Cai Wenji, hated the lack of good teachers at home, and wanted to travel to Hangzhou. Zhu Yingtai, eager to learn, disguised himself as a fortune teller and said, "It's best to let your love go out according to the result of divination." I hope my father sees his daughter Joe disguised as a man, and there is no flaw. In order to disappoint her, he had to reluctantly agree. England and Taiwan Province disguised themselves as men and went to Hangzhou to study. On the way, I met Liang Shanbo, a scholar who came to Hangzhou from Huiji (now Shaoxing) to study. As soon as I saw him, I liked reading each other very much. On the Caoqiao Pavilion, I made a righteous knot in Jin Lan with a pinch of soil as incense. A day later, the two men came to Song Wan College in Hangzhou, where they were accepted as apprentices. From then on, students read * * *, and they were inseparable. Liang Zhu studied in the deep sea for three years. Yingtai loved Sambo deeply, but Sambo never knew he was a woman. She only cares about brotherhood and has no special feelings. I wish my father misses his daughter. I am in a hurry to return home, so Yingtai has to hurry home. Liang Zhu broke up and was reluctant to go. On the way to the 18-mile farewell, Yingtai kept borrowing things to caress and hint at love. Shan Bo is honest and simple, and he doesn't know why. Yingtai is helpless. She lied that her nine sisters look similar to herself and are willing to be a matchmaker for Shanbo. However, due to Shanbo's poverty, she failed to arrive as scheduled. When Shanbo went to Jia Zhu to propose marriage, I didn't know that Zhu Fu had betrothed Yingtai to Ma Youcai, the son of the satrap who lived in Maoyicheng (now Yinxian). A happy marriage has become a shadow. The two met on the balcony, looked at each other with tears in their eyes and left sadly. When we leave, we make a vow: we can't live together, but we must die together! Later, Liang Shanbo was named Yin County (now Fenghua County) by the imperial court. However, Sambo became depressed and died soon. He was ordered to be buried in Kowloon Market, a trading city. Yingtai heard the bad news of Shanbo and vowed to die. When Yingtai was forced to get married, she made a detour to worship Liang Shanbo's tomb. Under the induction of Zhu Yingtai's wailing, the tomb burst, Yingtai jumped into the tomb, the tomb reunited, the wind stopped raining, the rainbow hung high, and Liang Zhu turned into a butterfly, flying in the world. Xie An, a famous prime minister in Shangyu, heard about this miracle, so he invited the emperor and named it the "adopted daughter's tomb".