Human flesh and bones
The idiom "white bone of human flesh" comes from Guoyu · Wuyu. It literally means to bring the dead back to life and make the white bone grow flesh again. It means to give people great kindness.
The definition saves the dead and makes the bones grow again. Metaphor gives people great kindness. it's from Guoyu · Wuyu: "the king of Yue can cure the dead, and the flesh and bones are white." it's God's gift to come here. It's like a dead man with white flesh and bones, who dares not to be taught! (Chapter 81 of the chronicles of the Eastern Zhou Dynasty by Feng Menglong of Ming Dynasty)
Human flesh and bones
proceed from the one to the other - yóu cǐ jí bǐ