Li Chengqian knew that it was unrealistic to ask Xiao Tang to use Da Tang's existing technology and materials to create a steam machine. Without rubber, it was impossible to achieve sealing.

But he had no choice now. Rubber doesn't mean that there is something that can be found. This thing has to be restored by Lao Dugu's South China Sea Fleet. So after leaving Xiao Tang's Research Office, Li Chengqian found that he seemed to have something to do.

That night, Li Chengqian appeared again in the conference room built by Lao Cui. However, compared with the last time, there were only two people in the conference room, he and Lao Cui.

"What's going on? Where is the person?" Li Chengqian sat in the main seat awkwardly. After waiting for a long time, he turned his head and asked Cui Yu, who also had awkward face.

"Your Highness, the few people you are looking for are not in the territory of the Tang Dynasty, and I can't find them." Old Cui replied with a helpless smile.

In the afternoon, I just heard what Li Chengqian said about the South China Sea Fleet, and thought that the people he was looking for were all in the Yazhou area. But when I went to recruit people in the evening, I found that no one of the people Li Chengqian needed to find was there, and it seemed to have disappeared. There was no other possibility that such a situation except for these people not in the territory of the Tang Dynasty.

As mentioned earlier, the only place that the underworld can manage is within the territory of the Tang Dynasty. If the Tang Dynasty does not care about the jurisdiction of the underworld, even the people from the Tang Dynasty cannot do it. If they die, they can only wait to be extradited back. Of course, they can also capture other countries' territory. In this way, even if it is the territory of the Tang Dynasty, Lao Cui can go over and recruit people, just like the Western Regions Legion.

Li Chengqian also knew that Lao Dugu and his group of guys had run away from the wild now, and they were riding sharp sea boats every day, but they never expected that these guys would actually run outside the territory of the Tang Dynasty. In this case, he naturally could not blame Lao Cui.

Finally, I had no choice but to announce the meeting and pat my butt and leave this gloomy conference room.

One day, two days... After five days, Li Chengqian finally gave up and let go of Lao Cui, who had been tortured and was about to go crazy, and no longer asked him to recruit people in the South China Sea.

But Lao Dugu couldn't inform him, but the matter still needed to be done. Helplessly, Li Chengqian could only pat his head and find a way to use the knowledge he brought from later generations to find ways to make up for the problem of no rubber.

As the saying goes, medicine is not a disease, and Buddha has a destined person to live with. After racking his brains for a whole day and night, the great prince finally came up with a solution, and the source of this method was Changle.

"Brother, isn't it just a fig? Why are you so funny when you hold it?" The little girl looked at the fig that Li Chengqian snatched from her hands with a little anger, and asked with a pout.

"Silly Le? You are so stupid. You have asked you to read more books a long time ago, but you just don't listen. I tell you, this thing is of great use, do you understand the great use?" Li Chengqian rolled his eyes, looked at the figs in his hand happily, and fantasized about where the first steam machine in the Tang Dynasty was to be used.

"Of course I know, but this is a medicinal herb. You can't eat it randomly. Brother, don't eat it." Changle looked at Li Chengqian's look so happy that he was afraid that he would eat the fig fruit.

"Go and go, play." He threw the figs to Changle casually, and Li Chengqian quickly walked out of the 'Lanruo Temple': "Xiaoyu, Ye Mei, come with me to the intelligence department!"

"What, stinky brother, I will ignore you again!" Changle, who was thrown aside by Li Chengqian, stomped his feet hard, and his beautiful little face was almost wrinkled into a bun.

However, Li Chengqian has no intention of paying attention to her now. The fig made Li Chengqian think of something buried deep in his memory.

In later World War II, due to lack of resources, the German army used the juice from the branches of the flowerless tree instead of rubber sap, and made a large number of rubber-like products, and achieved success.

Li Chengqian has forgotten that he has seen this information from later generations, but this is more or less a hope. There are many fig trees in the Tang Dynasty, and he can find one to try it. If it succeeds, at least in the short term, he will no longer have to worry about rubber.

"Your Highness, why are you here?" Heizi and Dugu Yufeng were looking at a map and thinking about something. When they saw Li Chengqian coming in, they couldn't help but be surprised. This young master rarely comes to the intelligence department. This time, he is abnormal. Did something big happen?

"Do you know figs?" Li Chengqian didn't say much and went straight to the point.

"I know, what's wrong?" Dugu Yufeng nodded, and the curiosity in her eyes became even stronger.

"I need the white juice flowing out of the fig tree. You can think of a way to get back a hundred kilograms as fast as possible." Li Chengqian did not explain to Dugu Yufeng what he wanted the juice of the fig tree, but simply made his own request.

A group of guys who practice martial arts and muscles in their brains explained to them what rubber is. Li Chengqian felt that he might as well play a piano against the cow and try whether the cow could understand it.

"Is there any juice in the fig tree?" Su Meng asked in confusion.

It was new to Li Chengqian's visit to the "Seventh Group" of the Intelligence Department, so all the guys who stayed in Beijing and did nothing came over.

"Your Highness said there must be, there must be, and there must be no, do you know?" Shu Tian poked Su Meng without any trace and muttered in a low voice. However, although he was silent, he was still heard by people around him, including Li Chengqian.

"You are responsible for fifty kilograms yourself." Li Chengqian said angrily with a glaring glance at Shu Tian.

"ah?!"

"Ah what, that's it." Li Chengqian didn't care where Shu Tian went to get fifty kilograms of fig tree juice. If he had the ability to transform it out of thin air, it was his ability to cut it one by one. Anyway, it would be fine if he took it back for fifty kilograms per kilogram. If he didn't get it back, he would just use this reason to beat him up. Who made this damn guy talk so much nonsense?

Heizi and Dugu Yufeng looked at each other and found that Li Chengqian was not a joke. He no longer hesitated and agreed to the matter. At the same time, he immediately began to arrange things.

As for Shu Tian, ​​the unlucky guy, he was begging his grandfather and asking all the people in the "seven groups" to help him solve the problem of fifty kilograms of tree sap together.

Li Chengqian didn't care who he was asking for. After arranging the task, he took Yang Yuxin, Ye Mei and his twin brothers to leave the Kebaoke and headed straight to Lao Cheng's house.

If you remember correctly, there seem to be a few figs in the backyard of Cheng Laohuo's house. You can try it out to see if you can really solve the rubber problem.
Chapter completed!