She is gonna test how big he is.

G** this master really can't make up her mind.

Tbh idk why MC is bothering to go after the master like is it really necessary? Dude got 5 chicks guaranteed by now excluding Zhu's master which is obviously easy as picking coin on the street for mc at this point while the master is just being a b#tch and can't make up her mind how she wants to handle her feelings mind you she is over a couple of centuries old 💀 but hasn't learned how to regulate her basic emotions. She feels more like liability at this point.