Nangong Yun also stopped the action of opening the door. Just moments ago, she had thought it was the caregiver returning after forgetting something and coming back to knock on the door!
However, seeing Xiao Yifei's expression now made them suddenly feel that the matter was not as simple as they thought.
And strangely, the sound of the knocking had risen only once before it abruptly went silent.
Nangong Yun instinctively looked through the door's glass to check outside, but she saw nothing. After realizing this, Nangong Yun suddenly narrowed her eyes.
"Xiao Yifei, what's wrong?"
She asked, furrowing her attractive brows in confusion.
However, upon seeing Xiao Yifei once again, Nangong Yun sharply noticed that his complexion had suddenly changed again!
"Be careful!"
Due to immense tension, Xiao Yifei's face even seemed slightly distorted, looking extremely fierce!