It's your sister.

"What?" Ning Xin'er was also shocked and said, "What's going on? How did he manage to escape?"

Sun Hao replied, "I'm not too clear myself, it seems like he climbed over the wall."

Ning Xin'er furrowed her brows and said, "How could that be possible? The detention center's walls are so high, and there are also electrified fences. It's impossible for him to climb out. Unless there was an insider helping him!"

Sun Hao said, "That's what I was thinking too. But that's not even the most important part. The important thing is, this guy might go after Captain Ning for revenge once he's out, so you need to be careful, Captain Ning!"

"I know. If he dares to come, I'll just catch him and bring him back!" Ning Xin'er said with a cold laugh. As if I wouldn't take him seriously. After all, I was a women's combat champion back in the police academy. How could I be afraid of an Ah-Fei?"