The reason why it is so sure that it is left behind by the dragon leader is because the octagonal treasure chest has seven dragon logos on it, and they can recognize the dragon at a glance.

Among the various organs of Zhonghai Mansion, Zhao Xingchen has come into contact with six secret service agencies, seven equipment agencies, and eight spiritual institutions.

As a specially designed weapon and special-purpose utensils of the seven, each design has a special dragon logo on it, just like this octagonal treasure chest, purely with the password to open, if the password is lost, it is almost the same as waste, it is very difficult to open!

"At that time, a total of three octagonal treasure chests were designed in seven places, this is the smallest one, I heard that it was sent to Kunlun, and people from eight places were invited to design it together, and the nine-square grid password pattern was adopted, which was very complicated, and the wrong order had to wait for thirty days to be re-cracked, once missed three times, it would be permanently locked, and it would not be opened if the correct password was entered!"

"In other words, there are very important things in this octagonal treasure chest, and the disappearance of the dragon head boss may be related to this thing, right?" Long San asked Long Er with a solemn face.

Ryuuji looked at Ryuichi, nodded and said, "Very likely!"

Long Yi said to everyone: "Then let's find Langdon's most famous lockpicking expert now and see if we can open this box!"

Zhao Xingchen has no opinion on this, Erfu is known as Langdentong, he grew up here with his parents since he was a child, and he knows that there is a famous locksmith in the local area of Union Island, so he took Zhao Xingchen and Long Er to find this person.

In a lock shop, the young locksmith with a top hat saw the three guests come in, and did not greet them too warmly, Erfu explained to Zhao Xingchen and Long Er in a low voice: "The attitude of the Langdon people towards the Zhongzhou people is divided into two poles, they are very polite to the Zhongzhou people who wear famous brands, and ignore the ordinary ones!"

This is a typical dog looking down on people. However, Zhao Xingchen and Long Er didn't care about this, and said to Erfu: "Tell him, let's find Master Krell!"

Hearing Erfu's translation, the locksmith muttered angrily, without Erfu's translation, Zhao Xingchen took out the one hundred yuan exchanged on the road and handed it to the locksmith.

The locksmith took the money, but didn't take them away, just looked at Zhao Xingchen without blinking, Erfu scratched his head next to him, and whispered to Zhao Xingchen: "This is the reservation deposit, and his tip!"

Special Union Island is also considered to be one of the top ten powerful countries in the earth's economic strength, although Langdon is not an international big city, it is also considered to be one of the top three powerful cities on Union Island, why are the people here of such quality?

Zhao Xingchen casually took out a fifty yuan bill and handed it to the locksmith, the guy's eyes suddenly lit up, this is a very generous tip, and immediately made a gesture of invitation to Zhao Xingchen and the three of them with a smile, led the three of them to the inner room, and sat on the sofa and waited.

After a while, an old man in his seventies walked over, he was the lockpicking master Krel.

Erfu explained to him the intention of the three of them, and motioned for Long Er to take out the octagonal treasure chest. In fact, what Boss Huang didn't know was that the octagonal treasure chest in his hand was about the size of a watermelon, and it was not easy to hold or carry, but in Ryuuji's hands, it could be folded continuously and turned into a fist-sized one, which could be placed in a pocket!

Watching Ryuuji turn the fist-sized thing into an octagonal box the size of a watermelon after a series of splits, Krel's eyes lit up, and he looked at it with great interest, and asked Erfu without listening: "Where did you get this thing? It's very cleverly designed! It's just a craft! I need to study it well! In this way, put it here, you guys come back tomorrow to get it, maybe I'll think of a way to open it!"

Without Erfu's translation, Zhao Xingchen directly said to Krell in the local language: "Master, the things in this are very important to us, so we can't leave it here! If it can't be opened today, we will take it away and bring it back tomorrow!"

"You're doubting my character and trying to swallow this thing of yours, aren't you? you're insulting my work ethic! If that's the case, then you're going to be smart!" said Krell angrily.

The young locksmith on the side looked at Zhao Xingchen and the others with a dissatisfied face and said: "Mr. Krell is the master of the entire Union Island lock industry, deeply respected and loved by peers and customers, and now he will have thousands of yuan to make a move, and he can receive you in his busy schedule, which is already enough for you outsiders, I didn't expect you to doubt the respected Mr. Krell, then please go back, I bet you can no longer find a more skilled locksmith than Mr. Krell!"

"Captain......" Ryuuji called out in a low voice, he also knew that it would take a certain amount of effort to open this octagonal treasure chest, and this Krel's request was not too much.

But Zhao Xingchen was very persistent, and said to Krel: "I'm sorry Mr. Krel, I'm not doubting you, but this thing is very important to me! So I have to watch it be opened all the time! I will give you double the price, and I will watch you crack its code here, if you can't open it today, I will bring it over tomorrow!"

Seeing the persistence in Zhao Xingchen's eyes, coupled with the fact that this thing had indeed aroused Krel's own curiosity and desire to challenge, Krell finally compromised, and the price had already doubled anyway.

For the rest of the afternoon, Krell had been fiddling with the octagonal treasure chest, but had not operated on the cipher disk once, because he also knew that if he did make a mistake, irreversible consequences would occur.

However, until the evening, he had no way to open the octagonal treasure chest, so he had to foolishly let Zhao Xingchen and them leave with the octagonal treasure chest.

"Wait for Erfu to go back by himself, tell Long Yi that they will come to meet us, look at the restaurant, we will find a place to live nearby in the next few days!" Zhao Xingchen explained to Long Er and Erfu.

"Okay!" The two of them now know Zhao Xingchen's character, and they won't explain their decisions much, just do what he tells them to do.

Langdon was originally a tourist city on Union Island, and it was very convenient to find a hotel, so the two quickly found a four-star hotel with a good grade nearby, and opened three rooms, Zhao Xingchen lived in one by himself, Long Yi and Long Er, Long Si lived in one, and Long San and Long Wu lived in one.

Waiting for the members of the dragon group to gather, Zhao Xingchen took everyone to eat at the shrimp restaurant, and when he came back, he just wanted to go to the bathroom to rest, but suddenly stopped and looked around.

Everything seemed to be nothing unusual, but Zhao Xingchen knew that someone had come to his room and turned it over, but he just had a backpack and took it with him for dinner, so the other party didn't find anything.

Someone knocked on the door, Long Yi and the others all came over, and said to Zhao Xingchen with a solemn face: "Captain, someone has entered our room and turned over our backpack!"

Zhao Xingchen nodded and said to everyone: "I know, I have also been turned over here, and we are being targeted! Be careful tonight!"

Ryuuji snorted coldly and said, "Is that Krel?"

Zhao Xingchen smiled coldly, "It's just an old man, it won't be him, but it must have something to do with him!"