C180 An Astonishing Progress

I have to say, some old words are very accurate.

For example, it was easy to go up the mountain, but difficult to go down the mountain.

Lee Beizhi, who had just arrived at the first floor, had experienced it very well.

What was the use of "Spirit Reproduction?" Continuing to go down the stairs, it still caused his calves to feel numb.

Although it didn't hurt, it didn't feel good either