Natural processes always proceed in the direction of entropy increase, and the direction is irreversible. Heat does not spontaneously flow back from a low-temperature object to a high-temperature object.
Zhang Jian is like a machine that does not generate heat.
It took a long time for Li Jinna to realize that his calories were constantly being consumed.
But when Li Jinhao didn't have extra heat and didn't want this machine. The machine started moving slowly again.
First person
Concept: In our high school years, we gave too many symbols to that special person. Only when I grew up did I realize that I was actually the bravest and most powerful person.