Zhang asked, "Miss Zhang, what's your position?"
"I was Manager Wang's former secretary."
"Why former secretary?"
Zhang Xiaoling shrugged, "Because I leaked his gossip, which made him hold a grudge against me, so he found an excuse to transfer me. Now I'm Yuan Kun's purchasing assistant."
"He didn't fire you?"
"The company owner is my grandfather."
"..." No wonder she dared to speak so freely - having backing really makes a difference!
Fang Rui asked, "What's the relationship between Chen Yuankun and Sun Xiaoning?"
"Sun Xiaoning was obsessed with a male celebrity who looks very similar to Chen Yuankun, so she pursued Chen Yuankun for a while, but he wasn't interested in her." Zhang Xiaoling poured herself a cup of tea, then poured one for Fang Rui and the others. "Sun Xiaoning doesn't have a good reputation in our company. Look, she's only 27 and already a supervisor with just a college diploma. She must have used improper means to get promoted."
Fang Rui interrupted her, "Couldn't she have become a supervisor based on her abilities?"
Zhang Xiaoling said disdainfully, "Based on ability? Chen Yuankun has both education and capability, has worked here for two years, and is still just a mere purchasing clerk. In our company, ability is the least important thing. Our company is even more hierarchical than feudal society, with all promotion channels blocked by people with connections."
"How's the relationship between Wang Yonghua and Chen Yuankun?"
"Well... I suspect there's something inappropriate between them!" Zhang Xiaoling said mysteriously, "I often see Chen Yuankun and Manager Wang alone in the office, and at night too!"
Zhang exclaimed in surprise, "You suspect they're... but Wang Yonghua's wife never mentioned him having male lovers!"
"Wang Yonghua wouldn't tell his wife everything. Think about it - Chen Yuankun has been at this company for two years, and Wang Yonghua never recognized his abilities, but suddenly started favoring him six months ago. What do you think is the reason?"
Zhang countered, "Following your logic, Chen Yuankun has been at this company for two years, why didn't Wang Yonghua notice his... good looks before?"
"Oh, that's a good point. Chen Yuankun is so handsome, if Manager Wang, that pervert, was interested in men, he would have made a move long ago. Maybe I was wrong? Were they really just discussing work in the office? That's strange though - how could someone like Manager Wang be so dedicated to work?"
Fang Rui realized Chen Yuankun had lied in the interrogation room earlier - Sun Xiaoning had clearly pursued him, yet he claimed they weren't familiar. Why would he lie about such a small matter?
Zhang asked, "How's Wang Yonghua's relationship with his wife?"
"Terrible, of course! But now they each do their own thing. His wife found herself a young boyfriend outside and doesn't pay much attention to him anymore. Recently his wife was pushing for divorce, apparently because she fell in love with that young man she's keeping and wants to marry him instead. Manager Wang naturally doesn't agree - if they divorce, he'll have to split half his assets with his wife, plus his wife made him a cuckold, and he can't swallow that."
Zhang continued asking, "I heard Sun Xiaoning has a boyfriend, do you know about this?"
"Yes, she said she's dating a very handsome guy, but none of us have seen him. When we ask for photos, she won't show any. She's keeping it very secret. I suspect her boyfriend is actually Manager Wang. Haha, no wonder she can't show off a middle-aged greasy old man like him!"
"Thank you for your cooperation!"
Zhang Xiaoling grabbed Zhang, "Officer Zhang, let's exchange WeChat contacts. I feel like we really hit it off!"
Zhang quickly waved his hands, "No, no, my girlfriend is very strict."
"Hmph, it's not like I'm interested in you," Zhang Xiaoling mumbled, her eyes fixed on Fang Rui.
"..."
After leaving Jianhua Engineering Company, Zhang increasingly felt that Chen Yuankun was the murderer.
"Boss, do you think maybe Sun Xiaoning's boyfriend is Chen Yuankun, and he had Sun Xiaoning seduce Wang Yonghua, which led to Wang Yonghua favoring him?"
Fang Rui thought this didn't make sense, "If that's the case, how would Wang Yonghua's death benefit him? Would the new leader still favor him?"
"Oh, right. If that's the case, he wouldn't need to kill both victims. But no worries, once the DNA test results come back, we'll know if he's the killer or not."
When Fang Rui and his team returned to the station, the DNA test results were already out.
Mu Mian reported, "Chen Yuankun's DNA doesn't completely match the DNA found at the crime scene."
Zhang seemed disappointed, "So he's not the killer?"
Mu Mian paused before continuing, "But the similarity between the two DNA samples is 99%. Only identical twins could have such similarity. So the skin tissue left at the crime scene must be from Chen Yuankun's twin brother."
Zhang asked in surprise, "Shouldn't twins' DNA be completely identical?"
Mu Mian explained, "Not necessarily. Identical twins form when a fertilized egg splits into two embryos during development, but DNA differences can occur during cell division, and environmental factors can also affect our genes. So identical twins' DNA isn't 100% similar."
"No wonder the person in the mall looked exactly like Chen Yuankun but behaved differently," Zhang realized, but then frowned, "But Chen Yuankun said he doesn't have a twin brother, and his household registration shows he's an only child."
They had investigated Chen Yuankun's household registration - he was a local resident, and his household registry showed he was an only child with both parents living, and he wasn't adopted.