Just the right size

Although Allen Chen's hand speed was very fast, he was still noticed by the beauty. She quickly covered her eyes subconsciously, turned around and said, "Handsome Zoe, I didn't see anything, you guys continue."
"Ah? Sister Xiaoying?"
Zoe Su forgot that there was someone else at home and quickly and gracefully got off Allen Chen's lap.
But when she looked at Allen Chen's central part, it was already standing up high like a tent, and her face suddenly became even redder with embarrassment.
The...