Su Yunjin wasn't planning to teach Leng Jingxian a lesson, but she slyly asked Gu Ya to deliver a mirror to Leng Jingxian. Leng Jingxian, in her current state, certainly doesn't realize how frightening she looks. If Leng Jingxian receives a mirror, she will be able to see what she looks like now.
Su Yunjin couldn't help but chuckle at the thought of Leng Jingxian seeing her face covered in oozing wounds. Gu Ya found his wife's mischievous and cunning way amusing and shook his head with a smile. Gu Ya did not refuse his wife's request. Delivering a mirror to Leng Jingxian was a minor task, and it wouldn't create any issues, even if the Leng Residence found out—it wouldn't matter.
Coincidentally, King Ning instructed him to prepare a set of prison clothes for Leng Jingxian. Gu Ya could deliver the copper mirror to her along with the clothing.
