In that scene, Cai Jing thought that Tan Yi was sincerely seeking shelter from him, so he invited Tan to his mansion for a tea drinking ceremony. Cai’s servant found Tan's hidden weapons though, and Tan was caught by the guards.
Cai dared not execute Tan without permission, as he was Princess Grace’s tutor. He just reported him to the emperor.
"Camera!" Li Jie began serving tea.
As soon as he picked up a cup from the tray, the director frowned. "Cut!" This was the most annoying word for an actor to hear.
The director couldn’t tell what Li Jie's fault was, but he got a strange feeling from his acting. Qin Guan knew where the problem lay though. After a long-term training with Teacher Rong, he had learned how to serve tea.
He held up his hand to break the deadlock. "May I try?"
"You’re good at serving tea? But of course, you were the high school prince!" Fang Pingping looked at Qin Guan in admiration. What an elegant boy!
[1] They are all parts of a tea set.
[2] Emperor Chengzu of the Ming Dynasty (1368-1644)