Cao Gengrui choked in one breath.

"Ahem, ahem...... You...... Miss Xia, you can't talk nonsense! This password is also the unlocking of this combination lock, you unlock it, you must enter the correct password to unlock this lock, and ......"

"Smack." Before Cao Gengrui's words were finished, another crisp voice came, Xia Li, and unlocked the combination lock.

She looked at Cao Gengrui with some confusion.

"Is it really hard? I think it's very simple. ”

"Ah, you ......" Cao Gengrui looked at the lock that had been unlocked, and his eyes were as wide as copper bells, "this...... How can it be! ”

Even Mu Bai couldn't have solved this password so quickly.

"Huh? Could it be that this lock is broken? ”

"It can't be! It is impossible to break, this material is a material that is comparable to diamonds in terms of hardness, ductility, stability and other indicators, and it is impossible to break, this is made by the founder of the special combat team himself, and it is impossible to break. ”

"So I'll figure it out." Xia Li shrugged.

"It can't be!" Cao Gengrui picked up the combination lock, looked left and right, looked up and down, and looked at it several times, "Miss Xia, I'll set a password for you, and you can re-solve it." ”

"Okay."

Very unexpectedly, Xia Li quickly agreed.

Cao Gengrui was lucky because she solved it by chance, so she wouldn't continue to challenge if she met well, how could she dare to do so? Is it self-inflicted humiliation or does it have strength?

Cao Gengrui didn't dare to analyze it himself, he designed a number that he found difficult, locked the lock, and then threw it to Xia Li.

This time, he stared at Xia Li, watching Xia Li pick up the pen and paper on the table and do some calculations.

He looked at what she had written on the paper, and it was very organized.

And he also glanced at the draft when she unlocked it for the first time just now, and his logical ability was on par with his boss.

"Alright." This time, Xia Li still quickly solved the password.

"Smack." The combination lock is unlocked again.

Cao Gengrui stopped talking now, he hurriedly took Xia Li's draft just now, looked at it carefully, line by line, number by number, word by word, and finally looked at Xia Li with wide eyes.

"You...... How the hell do you do it! ”

"Hard?" Xia Li's face was also a little surprised, the deputy team of the special combat team is at this level?

"Isn't it difficult?"

"The old man from the countryside who adopted me before also played this kind of password with me, and he is a rural person."

“！！！！” A long row of exclamation marks appeared on Cao Gengrui's head.

Grandpa who adopted him? An old man in the countryside? Just a rural person?

He felt that the special operations team was being crushed by IQ.

"But you have a disadvantage in this, since you use this as a battle command and a code, you can't use such a complex calculation. Of course, complexity is good, it's complicated, the enemy can't figure it out, I mean, it can be improved, it can be improved to the point that the computer can do the calculation, and the complex will not be stolen at the same time, for example, it can be ......"

Xia Li said as she wrote down everything she knew.

This is what Grandpa Song told her five minutes before he died, and she always remembered it.

But she didn't need this cryptographic method, so it had been two or three years since Grandpa Song died, and she didn't use it, and she didn't need it in the future.