Who is the trump card of undercover? Who is the trump card and who is the traitor? It's silly to say it.

The trump card is actually a thing, which is a cover for * * * producers to come to China to set up China * * * producers. The reason is Wang Feng.

In a conversation with Xiaohong's mother after liberation, Xiaohong's mother said when asking the truth.

There is also a * * * international product, another ship, and Wang Feng's expression is amazing. In fact, she was surprised that Xiaohong's mother knew so much, and then said that there was nothing left to explain. So the trump card is actually a cover operation. but

It was this cover operation that was exposed because of the traitor's betrayal. The trump card in this cover-up operation is most likely the "university professor" stone or "social butterfly". The reason is that in the movie, Wang Feng said that the ace is not dead, Zhao.

Bi Wei was not censored, and Wang was not censored. He died. In the movie, there are only two of them in the movie. This may be a foreshadowing, or there may be a sequel. However, judging from the existing official title, it may be "university professor"

Teacher, because Zhao Biwei hid behind the car when she went to review after liberation, Teacher Shi didn't need a pass to enter the door. Generally speaking, those with big titles often contribute a lot, from this detail.

Generally speaking, it may be teacher Shi, but it is not absolute. It may be a foreshadowing. So the trump card is actually a cover action. The "real trump card" may be Teacher Shi, who finally sold a lock.