I always like to play with you. My name is Brother Lei. Because Yu Fei is older than Nie Lei, he mixed with society earlier than Nie Lei, and helped Nie Lei several times. More importantly, Yu Fei is very loyal, which is not only reflected in Zhang Feng, but also in Nie Lei. After Nie Lei confessed, Yu Fei was arrested together.

Yu Fei, male, associate professor, School of Marine Ecology and Environment, Shanghai Ocean University, and tutor of master students majoring in environmental engineering. Due to his early mixed society, he was arrested together with his eldest brother Nie Lei in the crackdown on gangs in China.