C523 Choosing the Hardest Project(1)

The next day, my head was heavy, and a clear knock on the door woke me up from my sleep.

"Wang Yi, are you awake?" Hu Feifei's voice was heard from outside the door.

I was shocked. I picked up the phone on the bed and saw that my phone was out of battery. I was really tired when I came back last night. My phone was out of battery and there was no alarm clock