Yu Tingmian was used by his dear father from beginning to end, squeezing all the money out of him, and even sent him to be a test subject. During the experiment, life would be worse than death and there would be no peace. He has forgotten the people in that world, but he only remembers Duan Getang. Although it is no longer clear what Duan Getang is, maybe it is light.
Intention: There is always someone in the world who will be the light in your life