An officer responded, "The deceased's girlfriend, Du Juan, works in a club. She is a DJ. She studied at an art college in this city a few years ago, but later dropped out to work in the club. She’s only twenty years old this year."

Lin Dongxue said, "Isn’t the age gap between the two of them too huge?"

"Some girls like uncles!" Chen Shi said and was pinched below by Lin Dongxue. He continued, "Call her over for questioning. The girlfriend probably knows more about the victim than the average person."

"Do we also need to question his friends and colleagues?" Old Zhang looked at the list of interpersonal relationships in his hand.

Chen Shi said, "This case is an extension of the gun mailing case. The person who sent the guns was aiming at people with grievances. In addition, the...