Tong Sheng is just a mortal woman. She has nothing to do with the heaven. She is only somewhat imagined by Lian Yao.
The first life: Under the oak tree, he met her through many tribulations. Later, when he returned to heaven, she only regarded him as a dream.
Second life: She was an orphan, she died after risking her life to save others.
In the third life, he finally found her, but he came for Lian Yao, and she was just a substitute. She went to the heaven and learned that she was actually from an ancient clan. She didn't know what to do with her inner feelings.
The fourth life: She doesn't remember, and she doesn't remember Querkey either. What will happen to the two of them?
In the end, she chose to help her father and forget about Querkey. If he was gone, would she still see him?
"If there is another life, I will never meet you again. I'm afraid I will tell you everything!"