First life
Tao Yao met Yan Fei Jing Xiu and Lin Qian. They were very kind to her. Tao Yao was innocent and cute, a little crybaby. Later, because of a very bad person, they all left Taoyao one by one and died.
In the end, even her brother Jing Xiu, who loved her most, was killed.
That day Taoyao lost everyone who loved her. She kept crying and crying until finally she made a deal with the God of the World. She was willing to dedicate all her time, emotions, and memories as long as she could save everyone who loved her.
The God of the World agreed, and finally time flowed backwards, and Yan Fei and others returned to the time when they were first born.
Taoyao lost all her emotional memories and became a "nothing" without any emotions, an existence beyond the world.
Tao Yao lost everything and floated in the world, becoming "Wu". No one in the world could see her. Tao Yao "Wu" had been floating in the world for hundreds of years until she met a little girl (Yan Fei)
Purpose: Mutual salvation and growth