Ultimately, Li Mei had no choice but to stay in his room. Of course, she had no privacy to speak of when she was actually with him during the night. So she couldn't even put off her mask anymore.
But that wasn't a problem for her. She didn't have any issue with keeping the mask on her face throughout the time.
In the past, when running away from the people of the brothel, he often had to endure many hardships and was forced to wear those masks every single day. Those days, her face would be full of blisters because of the mask. Thus, she started making masks that would give her skin some space, making it a bit more comfortable.
After much effort, she had learned to create such masks for herself. The current beautiful mask she had was a perfect definition of the result of her hard work. She ended up making it in half a day!