Who is the off-line camel developed by my father in Deep Sea Scare?

I have been protected in a fixed environment and have not experienced much. She always thought that everything around her was as beautiful as she imagined, but she never thought about how to solve the accident once it happened. So when her father is betrayed by his peers, she will feel particularly helpless inside. And the traitor's true identity also exposed:

1. In the past, Fei made this betrayal for selfishness and protection;

After losing all contact, Fei Zheng Peng became an unknown spy.

3. Finally, Chen Shan and others successfully found the key flaw in the cunning camel through a pack of peppers.

In the constant disguise, Fei Zhengpeng even forgot his original hidden purpose. He is not a good man, but he still has a little conscience about Yu. He did many unforgivable things, but not all for himself.

First, betraying a friend's fee was originally for self-protection, but seeing loneliness and helplessness, he still couldn't restrain his inner guilt. Because of this feeling, he will take good care of Yu, hoping to make up for his sins.

Second, no one can say that Fei's spy life is a torture. He has been an out-and-out sinner, and no matter how the future war develops, he can't get away with it. The only hope of sustaining life under multiple tortures is that Yu Xiaoxiao is late. Seeing her is like seeing the old days with good friends.

Third, the special way of origami Chen Shan has always remembered the story about her father, so she has never stopped looking for relevant clues. When all the evidence in the past was linked at the moment when Fei was seen origami, Chen Shan determined that it was him who betrayed him.

Do you know when Yu Xiaoxiao discovered the true face of Fei Zhengpeng?