On April 1st, April Fool's Day, Li Kainan found an excuse to sneak out of the campus at noon and met Bai Mengge at the gate of Yuechen's community on Kangyan Road.
The two of them walked hand in hand to the west along Kangyan Road, as if they were young lovers strolling aimlessly along the road.
"Let's go a little faster, we are on a mission." Bai Mengge squeezed Li Kainan's hand.
"This can't be done. The task assigned by our team leader is to keep a low profile on the investigation. If you go too fast, you will be easily exposed." Li Kainan would not miss the rare free time.
"Then buy me a bottle of water~" Bai Mengge no longer hesitated. After all, such pleasant afternoons that belong to the world of two people are rare.
"This should be the small park that Teacher Yue mentioned." Bai Mengge pointed to the entrance of the park in front of her while holding milk tea.
Li Kainan stopped and looked westward along Kangyan Road and confirmed: "It looks like this."
"I didn't expect there to be such a unique little garden near Sister Yingying's house." Bai Mengge took a sip of milk tea.
"Then let's get married as soon as possible, and then buy a house as soon as possible." Li Kainan said smoothly.
"You propose after a cup of milk tea? And why do you need to get married before buying a house?" Bai Mengge blushed.
"First, so that our names can appear on the real estate certificate at the same time! Second, because I have a purchase limit now!" Li Kainan's romance could only last half a sentence.
"Tch! You just took a fancy to my qualifications to buy a house." Bai Mengge pouted her mouth.
"Okay! Finish the task~" It seems that the straight man Li Kainan has long been accustomed to Bai Mengge who often offends him.
"Hmph~" It seemed that Bai Mengge was also used to Li Kainan's straight-male thinking, so she snorted and walked into the small park side by side with him.
The two of them wandered around the park for a while, and even found a pavilion to hang out for a few minutes before heading to their real destination. If Yue Chen had seen their actions, he would have scolded Li Kainan for "taking advantage of the opportunity."
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About fifteen minutes later, a delivery boy walked into the small park carrying two large plastic bags and handed them to Li Kainan.
Then Li Kainan and Bai Mengge walked hand in hand into a residential building not far from the small park. They were going to the "Stranger Hotel" where Yue Chen and Liu Yingying had been.
After Yue Chen saw the location of the uninspected bridge yesterday, he immediately analyzed that the bridge should be visible from the Stranger Hotel, and he happened to be able to see the bridge opening on the side near Yulong Apartment.
As for observation tools, Yue Chen had already given Li Kainan a high-precision telescope that was rarely used in the school laboratory. With the accuracy of this telescope, at this distance, it was enough to see clearly the texture of every brick in the bridge hole.
Following Yue Chen's instructions, Li Kainan and Bai Mengge knocked on the door of Aunt Mo's house, and then waited casually to eat.
"This place is quite special, Aunt Mo is so cute." Bai Mengge said.
"You go to the kitchen to help Aunt Mo and buy me a little more time." Li Kainan whispered to Bai Mengge.
After giving in to Aunt Mo for a while, Bai Mengge finally got the chore of washing vegetables, and then kept chatting with Aunt Mo about household chores, so that Li Kainan could observe with peace of mind.
I don’t know how much time passed, but I heard Bai Mengge shouting: "I'm coming, I'm coming, don't behave! Kai Nan, come and help!"
When Li Kainan heard the signal, he quickly put away his telescope and came to the kitchen with a smile on his face to help serve the food.
During this meal, Li Kainan was quite satisfied with the meal, but Bai Mengge was a little tasteless. After all, she was a person who couldn't hide things in her heart, and she always wanted to read it from Li Kainan's expression.
Observation revealed that Li Kainan was interested in teasing Bai Mengge and kept chatting with Aunt Mo about home affairs. The two of them had a great time chatting.
The meal was finally over and as soon as she walked out of the residential building, Bai Mengge jumped up and down asking about the result.
"I must have seen the so-called secret door. It is indeed very hidden." Li Kainan smiled meaningfully.
"Then I'll be relieved!" Bai Mengge is such a lovely girl. Once she knows the result she wants, she won't bother too much.
In the afternoon, Li Kainan returned to school, and Yue Chen was waiting for him anxiously at the entrance of the laboratory, because Yue Chen had just learned that today was the beginning of the month and he had to conduct an inventory of laboratory equipment.
"You're back, you almost killed me." Yue Chen almost took the telescope from Li Kainan's hand, turned around, put it back in the laboratory, ran out of the laboratory, and then let out a deep breath.
"What are the results of the investigation?" Yue Chen asked expectantly.
"Alas..." Li Kainan let out a long sigh.
"No results? How could it be? Is Ji Mingwei's information wrong?" Seeing that this clue was about to be broken again, Yue Chen immediately became nervous.
"I looked carefully for a long time, and there is indeed no secret door." Li Kainan shook his head seriously.
"Alas... I have to find a breakthrough again." Yue Chen sighed, feeling a little distressed.
"Hehe..." Seeing Yue Chen worrying alone, Li Kainan couldn't help but laugh out loud.
Yue Chen turned his head to look at Li Kainan without knowing why. He immediately realized that he had been deceived.
"Okay! You! You...you actually lied to me! I don't celebrate April Fool's Day like you, making fun of such a big thing!" Yue Chen said with relief.
"Brother Yue, why are you crying?" Li Kainan smiled even more wildly.
"This is related to the overall situation!" Yue Chen found a seemingly reasonable excuse for himself.
"I'm not lying to you, there is indeed no secret door." Li Kainan said with an embarrassed eyebrow.
"Ah?! Then why are you laughing?" Yue Chen's heart, which had just fallen to the ground, was lifted even higher again.
"Brother Yue, it's like this." Li Kainan straightened his expression and said, "I have been observing over there for more than half an hour. There is indeed no secret door under the bridge hole, and everything on the bridge piers is normal."
"Are you sure? Didn't you pay too much attention?" Yue Chen still didn't give up.
"You still don't believe me when I do things?" Li Kainan asked.
"Then why were you laughing just now?" Yue Chen said with some dejection. After all, Li Kainan still acted very safely.
"Because, although I didn't see the secret door, I found the sewage well." After Li Kainan finished speaking, he observed Yue Chen's affectionate changes.
"Sewage well? What do you think it does?" Yue Chen said with his eyelids drooping.
"What? Sewage well?" Yue Chen suddenly asked with his eyes widened.
Li Kainan didn't speak, just raised the corner of his mouth and nodded.
"You're so good, Li Kainan! You were out of breath when you spoke! You shook me twice in three minutes! I'll never finish it for you!" Yue Chen finally breathed a sigh of relief.
"Ah! Who told you to snatch my telescope just now?" Li Kainan said with some pride.
"Then I'll grab something else from you!" Yue Chen said, holding Li Kainan's shoulders and walking towards the toilet!"
"Hey! Didn't you say it was April Fool's Day! Oops! Brother Yue! I was wrong! Oops! Brother Yue, have mercy on me!" Li Kainan's voice begging for mercy echoed throughout the experimental building.