Nanzhi was planted with a virus to blackmail Yunting into creating a robot with human consciousness at the expense of transferring humans' own brains.
He designed a consciousnessless robot whose main function was to take care of his wife Nanzhi, but it secretly developed its own soul. The human world collapsed, but Fang Sheng survived on this planet. In order to resurrect Nanzhi, he traveled back 105 years ago...
Nanzhi: All functions of my body have been damaged, and I feel the pain of physical damage every day. And my lover Yunting did something unforgivable to keep me alive. I want to end it all with my death.
Robot Fang Sheng: I am the only robot that has generated consciousness on its own without being transplanted into the human brain. I don't have any grand wishes. The moment I awaken, making Nanzhi happy is mine. In human terms, it is my long-cherished wish.
Artificial intelligence designer Yun Ting: I never want to put human brains into machines, but Mumu,
I'm willing to go to hell if this can save you.
Intention: None