Actually, Xu Minjing had already woken up the first time Lin Feng called her name. However, the feeling of lying on Lin Feng's back was just so comfortable—Xu Minjing was really enjoying the sensation and didn't want to get down from Lin Feng's back. Therefore, she pretended not to hear and continued to feign sleep.
But later, since Lin Feng indeed didn't have the keys and couldn't enter the house, Xu Minjing pretended she was dreaming, shook her body, and deliberately let the keychain hanging from her waist make a noise.
Sure enough, in the quietness of the nighttime corridor, Lin Feng immediately heard the sound of the keychain and exclaimed happily, "So Teacher Xu's keys are hanging at her waist... This is good, I don't have to put Teacher Xu down, I can just reach back... and take down the keys..."
Following the sound of the keys just now, Lin Feng, with one hand supporting Xu Minjing, slowly reached towards her keys with the other.
