Just enough. He feels the breath hitch and the uncertainty in the pulse beneath his fingers. But he holds him in a way that allows Sizhui to easily break out of it. But when he doesn't hear yellow, he continues his firm hold. Nothing too strong that would endanger or bruise.

Jiang Cheng curses inwardly when that sweet ass presses and grinds against him, practically fucking itself against his cock. He breathes slowly to keep control of himself. This is about Sizhui's pleasure, not his own. Not yet. The whisper causes gooseflesh to rise along his side. Good, he'll give just as good as he gets. He quickens his strokes along his hardness, twisting his hand around the head, careful to mimic what he had seen Sizhui do to himself.

"Are you sure? I want you to tell me when you're about to come, then ask for my permission. Because this," he gives Sizhui's cock a squeeze, "this is mine now. I get to control when you do and don't come, do you understand, sweetheart?"