The story takes place in the Qing State, a journey that traverses a dying patient to a new world with the luxury of having a new life, so named; Celebrating the Remaining Life
Scratch the synopsis and give it a try. I will be reading as I am translating so give it a chance. It is about a boy named Fan Shen who is dying and in his words-
“Life is as lonely as dog shit.” (I feel ya)
Dying he traverses to a new world in the body of a two month old infant in the middle of an assassination.