He wants Sizhui to take his time to rise out of sub space and he seems to be doing a good job. Jiang Cheng whispers more praises to him.

"You were so good. Thank you for trusting me with that scene," he murmurs in his ear.

Once half the mug has been drank, Jiang Cheng gently sets it back on the tray and brings up a bao, ripping off a small piece and holding it up for Sizhui to take the piece and feed himself with it.