🔞💭 nsfw:

If he's in a suitable position, Xie Lian squeezes Hua Cheng's balls in a vicegrip while he's coming inside of Xie Lian. Don't you know--all /spiritual energy/ is stored in the balls, and Xie Lian needs every last drop.

It's nice, too, because Hua Cheng comes harder every time he does it.