The motive for the murder could not be found, and the truth was like a thick fog, hazy and unclear.

Mu Zi went home with the case file, and before getting out of the car, she asked Qu Mingjun to check on Wu Xinhan's roommate.

There are no traces of prying open on the doors and windows at the scene of the crime, if the murderer did not climb in through the window, then there must be a key, and Wu Xinhan's roommate has never shown up, which can be regarded as a clue to be excavated.

On Monday, Mu Zi deliberately brought the handkerchief to school.

During the lunch break, everyone ate in the cafeteria, and Mu Zi took out the handkerchief and handed it to Zhuang Jia.

"Can you tell what brand it is?" Mu Zi asked.

Although she suspected that the handkerchief had been dropped by the murderer, there was no label on it, so it was impossible to find it. Zhuang Jia is very proficient in clothing, so Mu Zi specially asked her for help.

"I can't see it." Zhuang Jia shook his head.

Mu Zi was a little disappointed.

"However, the owner of this handkerchief must be a man of great taste." Zhuang Jia said again inexplicably.

Mu Zi was slightly stunned, and hurriedly asked her, "Why?" ”

Zhuang Jia pinched the handkerchief and rubbed it gently, and said firmly: "Because the fabric of this handkerchief is very good, it is West Indian Island cotton, and it is pure cotton." ”

"What's wrong with pure cotton?" Jiang Zhinuan was puzzled and asked, "Aren't the pure cotton we usually wear?" ”

"It's different." Zhuang Jia shook his head again and again, "The so-called pure cotton in our life is actually not pure cotton, but pure cotton fabric with 2% chemical fiber, which is done to solve some shortcomings of pure cotton fabric, but this handkerchief is absolutely pure cotton, without a trace of chemical fiber fabric." ”

Mu Zi was ignorant and asked, "What do you mean...... Is it expensive? ”

"How expensive is such a small handkerchief?" Zhuang Jia smiled and explained, "But without the 2% chemical fiber, the taste is immediately different, just imagine, even a handkerchief requires pure natural fabrics, how particular should this person usually be about clothes?" ”

She also gave an example: "It's like 24k gold, it's valuable, but it's soft, what if you change it to 18k gold?" It's hard, but it's not worth it, people who really pay attention to it, they will never buy 18k gold when they buy gold jewelry, once they are mixed with something, even if they are beautiful, but the taste is degenerate, what a terrible thing! ”

Mu Zi couldn't quite understand how terrible the degradation of taste was, but he finally gained something-

This handkerchief will never belong to that model.

It won't be Gu Yan, Gu Ershao always chooses the best and most expensive clothes, which are both luxurious and casual, and he will not study the composition of the fabric of the clothes.

Wang Zilong sat next to him and listened to it, and praised Zhuang Jia rarely: "I can't see it, you know a lot." ”

Zhuang Jia was a little proud: "How can you do without two brushes." ”

So today's lunch was extraordinarily harmonious, and the two didn't quarrel, and there was talk and laughter.

Mu Zi and Jiang Zhinuan are very unaccustomed to it.

After eating, Mu Zi returned to the classroom, sat alone at the desk, and pinched her handkerchief and thought.

Such a good fabric cannot be made in an ordinary factory, it should be a luxury brand...... It would be nice to know what brand of handkerchief is, and luxury stores usually keep a record of the customer's purchase.

Mu Zi decided to ask Zhuang Jia again.

Zhuang Jia was not in her seat, and it seemed that she had not returned to the classroom after lunch.

Mu Zi walked out of the classroom, but saw Zhuang Jia and Wang Zilong standing on the side of the stairs, close to each other, looking at the backs of the two from a distance, it seemed a little warm.

Mu Zi couldn't help but curl the corners of her lips, a sly smile flashed in her eyes, she wanted to see when the two of them got together.

She quietly approached and heard Wang Zilong's helpless voice-

"Don't talk nonsense all day long, I'll tell you the truth, our Rong Ye has a fiancée......"