Sun Mingyu is my brother

It had been the second day for Ning Hua, but she still hadn't woken up yet. The herbal medicine was given to her every two hours, but there was no sign of consciousness to her. Ning Chengli came to the room and set the small bowl on the table. 

"Your Highness shall leave for the palace," Ning Chengli told Wangjie. He tilted his head to gaze at him and shook his head. 

"What if I stay a night here?" Wangjie inquired. 

"That's not possible," Ning Chengli refused to him. "The palace has some rules, which every royal has to abide by. One more thing I would like to say to Prince Wangjie."

"What is it?" asked the prince curiously.