How are female spies exposed?

When the female spy said thank you, she accidentally said a sentence in Japanese. Han Xiao found a flaw, so her identity was also exposed. The female spy is a character in Die Hard Rowen. She hid beside Han Xiao and acted as the undercover of the Japanese army, but the fox's tail finally came out. In Die Hard Rowen, Wu Chun, a female spy, appeared in a kimono at a cocktail party after Japanese surrender. She was startled by the protagonist and was exposed. Wu Chun is a character in the TV series Die Hard Rowen. She is a female spy of the Japanese army. When the Japanese surrendered, she committed suicide.

Lin Dongye took out the only food for Wu Chun and other female soldiers and took the opportunity to ask Wu Chun about Lushan. Huang Zhiyuan came to Lin Dongye to report the investigation results. Wu Chun and others left in a hurry. Huang Zhiyuan found several suspicious people, one of whom was lu shan. Lin Dongye sent him to get Lushan back so that he could find out the truth.

Lushan was afraid that his identity would be exposed, so he was scared and fled. Huang Zhiyuan went out to look for it in the Woods, and the road and mountains dodged left and right, and finally got rid of the pursuer. Wu Chun came later with a bundle of cables in his hand and strangled Lu Shan on the spot. Wu Chun was still in shock when he returned to his residence. She pretended to rescue Lushan and killed it while Lushan was unprepared, creating the illusion of hanging herself.