She was worried that Guifen would sneak in and steal her card while she was asleep at night.
To prevent such an incident, the slight discomfort of wearing clothes didn't matter at all.
Old Madam Lu finished sewing the pocket and even added two buttons at the opening of the pocket.
Once the buttons were fastened, there was no way Guifen could take the card out of her pocket.
Then, Old Madam Lu placed the bank card into the newly sewn pocket inside her thermal underwear and fastened the buttons.
After lying in bed and covering herself with the quilt, she intermittently pinched the card through the thermal underwear to feel its firm shape.
With it so close to her body, she felt an immense sense of security.
The next morning, around four o'clock when it was still dark, Old Madam Lu got up, dressed, and tip-toed her way to the door of her room.
Seeing that both Guifen's and Youzhen's rooms across the way were silent, as was the courtyard, with no sound of anyone moving about.