He curls his finger inside him to stretch that tightness, using the man's own release as the lubricant. After a few passes with that one finger, he presses the second inside. His own desires pushing him into want to hurry. He told Xingchen to relax but it is him that is tense and desiring more.

He scissors those fingers inside of him, spreading and trying to stretch that area. Moving them in and out to give him an idea of what the feeling is going to be like before pressing them deeper inside of him up to his knuckle.