There doesn't seem to be a time limit

Gu Youli sat by Yu feibai's bed and held his hand tightly with her fingers crossed.

Her gaze was fixed on Yu feibai, who seemed to be in a deep sleep. Her face was as pale as snow, and her eyes, which were always cold and gentle, had now closed.

Even though he was unconscious, he was still shrouded in a deep and cold aura.

it's not Bai Qingqing, " she mumbled. She closed her sore eyes and pounced over, gently laying on his body.

she said in a low voice, her eyes full of apology and guilt, it's all my fault, it's all my fault. I only thought about my own death and forgot about you. If I had remembered that day, I would have told you and you would have been more careful. Then, this wouldn't have happened. Yu feibai, I'm sorry. Please wake up. If you don't wake up, I'll marry your son off to someone else.

yu feibai did not move. he was still in a deep sleep and his breathing was shallow.