I don't know what kind of skill Cheng Xiaozhu has, but in just the time it takes to eat a meal, she's calling Xiao Baoqin sister, holding hands and being as intimate as best friends.
On the other hand, Shi Gui clearly doesn't trust her. Not only does she refuse to reveal her identity to meet, but she also simply hides in her room pretending to be a maid and doesn't come out.
Xiao Baoqin is much more magnanimous though. Perhaps in the eyes of noble families, it's no big deal for a man to have seventeen or eighteen concubines or for a woman to have fifty or sixty paramours. She even cheerfully expresses,
"Liu Lang, don't worry. I understand that distance makes the heart grow fonder. The top-notch bedroom is ready for you and Junior Sister Cheng. Feel free to rest. Oh, and would you like some Yangquan Wine to spice things up..."
"No need."
Tie Dan emotionlessly declined.
"Brother Liu, there are so many things I want to tell you..."