Li Chengqian knew that it was unrealistic for him to ask Xiao Tang to use Datang's existing technology and materials to build a steam engine, and it was impossible to achieve sealing without rubber.

But he has no way now, rubber is not something that can be had, this thing has to rely on Lao Dugu's South China Sea Fleet to get it back, so after leaving Xiao Tang's research office, Li Chengqian found that he seemed to have something to do.

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

"What's going on? What about people? Li Chengqian sat on the main seat awkwardly, and after waiting for a long time, he turned his head, looked at Cui Yu, who also had embarrassment on his face, and asked.

"Your Highness, the people you are looking for are not in the Tang Dynasty at all, and the ministers can't find them." Lao Cui replied with a wry smile helplessly.

In the afternoon, when he only listened to Li Chengqian's statement about the South China Sea Fleet, he thought that the people he was looking for were all in the Yazhou area, but when he went to pull people in the evening, he found that none of the people Li Chengqian needed to find were there, and it was as if they had disappeared.

As mentioned earlier, the place that the underworld can manage can only be within the territory of Datang, and if you leave Datang, you don't care about the jurisdiction of the prefectural government, even if it is a person from Datang, you can only wait to be extradited back. Of course, it is also possible to knock down the territory of other countries, so that it is the territory of the Tang Dynasty, so that Lao Cui can also go over to pull people, just like the Western Regions Army.

Li Chengqian also knew that Lao Dugu and his gang were now running wild, running around on the sea every day in a pointed bottom sea boat, but he never thought that these guys would run out of the territory of the Tang Dynasty, and in this case, he naturally had no way to blame Lao Cui.

In the end, he could only reluctantly announce the dismissal of the meeting, pat his ass and leave the gloomy conference room.

One day, two days ......, and after a full five days passed, Li Chengqian finally gave up, let go of Lao Cui, who had been tortured and was about to go crazy, and no longer let him go to the South China Sea to pull people.

But Lao Dugu couldn't inform him, but things still needed to be done, and the helpless Li Chengqian could only pat his head and think of a way, using the knowledge he brought from later generations to find a way to make up for the lack of rubber.

As the so-called medicine doctor immortal disease, Buddha Du is destined to be a person, and after racking his brains for a whole day and a night, he finally asked His Royal Highness the Great Crown Prince to come up with a solution, and the source of this method turned out to be Changle.

"Brother, isn't it just a fig? What are you doing with it? The little girl looked at the figs that Li Chengqian snatched from her hands with some gagged breath, and asked with a pout.

"Silly music? You're stupid, I've asked you to read more books a long time ago, but you just don't listen, let me tell you, this thing is very useful, do you understand? Li Chengqian rolled his eyes, looked at the fig in his hand beautifully, and fantasized about where the first steam engine in Datang would be used.

"Of course I know, but this is a medicinal herb, you can't eat it indiscriminately, brother, you must not eat it." Changle looked at Li Chengqian's appearance that he was about to go crazy, for fear that he would eat the fruit of the fig.

"Go, go, play." Throwing the fig to Changle casually, Li Chengqian walked quickly towards the outside of the 'Lanruo Temple': "Xiaoyu, Night Charm, follow me to the Intelligence Department!" ”

"What, stinky big brother, I won't pay attention to you anymore!" Changle, who was thrown aside by Li Chengqian, stomped his foot fiercely, and his beautiful little face was almost wrinkled into a bun.

However, Li Chengqian didn't have the heart to pay attention to her now, and that fig made Li Chengqian think of an incident that was buried deep in his memory.

Later, in World War II, due to the lack of resources, the German army used the sap from the branches of the fig tree to replace the sap of the rubber tree, and made a large number of rubber-like products, and succeeded.

Li Chengqian has forgotten which information he has seen from the later generations, but this is more or less a hope, there are many fig trees in Datang, he can find one to try, if it is successful, then at least in the short term, he no longer needs to worry about the rubber matter.

"Your Highness, why are you here?" Heizi and Dugu Yufeng were looking at a map and pondering something, and when they saw Li Chengqian coming in, they couldn't help but be a little surprised. This young master usually rarely comes to the intelligence department, this time it is unusual, is there something big?

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

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

"I need the white sap that comes out of the fig tree, you go and think of a way to get it back as quickly as possible." Li Chengqian didn't explain to Dugu Yufeng what he wanted the sap of the fig tree for, but simply put forward his request.

A group of guys who practiced martial arts and trained all the muscles in their brains explained to them what rubber was, and Li Chengqian felt that he might as well get a piano and play it on the cow to see if the cow could understand.

"Is there juice in the fig tree?" Su Meng asked in a daze.

Li Chengqian's arrival in the 'Seventh Group' of the Intelligence Department was a new novelty, so all the guys who stayed in Beijing and had nothing to do came over.

"Your Highness said that if there is, then there must be, and if there is not, you know." Shu Tian stabbed Su Meng without a trace and muttered in a low voice. It's just that although it was quiet, it was still heard by the people around him, including Li Chengqian.

"You're responsible for fifty pounds yourself." Glaring at Shu Tian, Li Chengqian said angrily.

"Huh?!"

"Ah, what, that's it." Li Chengqian didn't care where Shu Tian went to get fifty catties of fig tree sap, if he had the ability to conjure it out of thin air, it was his ability to cut them one by one, anyway, it would be fine to take back fifty catties and a pound, if he didn't get it back, just use this reason to beat him up on the board, who let this damn guy talk so much nonsense.

Heizi and Dugu Yufeng glanced at each other, and found that Li Chengqian didn't seem to be joking, and they no longer hesitated at the moment, they both agreed to the matter, and at the same time immediately began to arrange for the next errand.

As for Shu Tian's unlucky guy, he was begging his grandfather to tell his grandmother for his bitter pleading, and begged all the people in the 'seven groups' to ask everyone to help him solve the problem of fifty catties of sap.

Li Chengqian didn't care who he begged for, and after arranging the task, he took Yang Yuxin, Ye Mei and his twin brothers to leave the Science and Technology Department and go straight to Lao Cheng's house.

If I remember correctly, there seem to be a few figs in the backyard of Cheng Lao's house, and he can just get some sap out to try it out to see if he can really solve the rubber problem.

(End of chapter)