I sat down with Li Xiude in his living room. His daughter, Li Xiang, hadn't gone to school today, and his wife, Yu Xuetao, was also at home.Yu Xuetao remained silent throughout. I handed a photo to Li Xiude and asked, "Have you seen this white Porsche before?"While questioning him, I carefully observed his reactions with my enhanced gaze.He appeared calm and contemplative, eventually responding, "What car is this? I've never seen it before.""Really? Someone said they saw you driving it on the morning of the 18th!" Despite my sharp perception, I couldn't discern whether he was lying. His composure was unnervingly solid."That's impossible. They must have been mistaken. I just got back—I couldn't have been driving that car yesterday," he replied matter-of-factly.I had already verified this claim with surveillance footage and was in the process of gathering witnesses. I asked, "Did your wife accompany you on your trip?""Yes. I had a business trip to Haogang City, and since I had some free time, I decided to take them to a theme park. The town's restaurant owner and my coworker, Guo Fuming, can vouch for me."Before coming to Jiaoyu Town, I had already looked into his story. The restaurant owner confirmed that Li Xiude usually came by daily for dumplings but hadn't shown up on the 18th. Guo Fuming, an electrician and a friend of Li Xiude, said he had wanted to visit Haogang City that day but couldn't due to work obligations.When I asked Li Xiude about the timing of their theme park visit, he promptly replied, "Around 1 PM."His wife's response aligned with his.I then took Li Xiang aside for a separate interview. "Where were you on the 18th? What were you doing?"She hesitated, then reluctantly said, "I went out… We visited the theme park in Haogang City.""What time, roughly?"Li Xiang paused, seemingly lost in thought, before replying, "Around 2 PM, I think.""Are you sure it wasn't 1 PM? Your father said 1 PM," I countered.After another moment of hesitation, she responded, "He must have misremembered. It was definitely 2 PM."Her answers seemed natural and unrehearsed.Realizing I wouldn't get much more from the family, I left the house and stepped into the courtyard. Pulling out my phone, I called Xie Deguang, instructing him to track down anyone who might have interacted with Li Xiude's family during their trip—relatives, acquaintances, even strangers.After extensive questioning, one witness, an elderly local man, confirmed encountering Li Xiude on the 18th."How can you be so sure?" I asked."Because he mentioned the 'Nuwa Mending the Sky' 5D show at the theme park. I've never had the chance to see such things in my life. I even asked him to tell me about it when he got back," the man explained.Another witness, a theme park waitress, corroborated the story. She recalled that Li Xiude spilled her entire tray of soda and had to compensate her 300 yuan. Short on cash, he even went to an ATM to withdraw more.The combination of surveillance footage, timestamps, and multiple witness statements confirmed that the Li family was indeed at the theme park on the 18th and not in Jiaoyu Town.The alibi seemed airtight. Too perfect, almost.I returned to the estate. Upon seeing me, Li Xiude greeted me with a casual demeanor. "Officer He, you're back again!""Yes, I am, Mr. Li. We've located the white Porsche," I said directly, locking eyes with him.Li Xiude didn't flinch under my intense gaze. Instead, he smiled and asked, "So what?""Someone claims to have seen you driving the white Porsche.""Officer He, I swear I've never seen that car. You have to believe me."Li Xiude's denial was firm, but I noticed his wife trembling in the background. This was the third time I'd visited, and her reactions were growing increasingly erratic.Deciding to change tactics, I left the estate but arranged for covert surveillance of Li Xiude. Shortly afterward, I observed him visiting a nearby restaurant and ordering a bowl of noodles.Signaling to Xiao Yuande, I watched as he entered the restaurant, playing the part of an exuberant officer. He ordered a bowl of wonton soup, chatting happily with the owner."What's got you in such a good mood, Officer?" the owner asked."Haha, of course I'm happy! We've just made a breakthrough in the Zhang Jiye disappearance case!" Xiao exclaimed."What kind of breakthrough?" the owner asked, intrigued."You know we pulled the white Porsche from the river, right? Well, we found a strand of hair inside! This could be a huge lead!"As Xiao mentioned the hair, I glanced sideways at Li Xiude, who was sitting nearby eating his noodles. His expression darkened, his demeanor turning grim. He quickly lowered his head, pretending to focus on his food.His reaction confirmed my suspicions: Li Xiude was definitely connected to Zhang Jiye's disappearance. With this newfound confidence, I signaled for Xiao, and we left the restaurant.