Steam engine? The oil burns in the air chamber, producing a gas that drives the piston into motion. This principle is not too difficult, but the refining of diesel and gasoline is very difficult! Petroleum? How is oil refined? Alas, it's so hard! Simple physical principles, Zhang Chen can understand. But the difficult thing is the chemical stuff, the refining of various substances.

Zhang Chen held a pencil in his hand and drew on a blank piece of paper. This pencil, also made by Zhang Chen himself, is a piece of charcoal. Tangled, so entangled, at the moment he only hated that he didn't learn physics and chemistry well in high school. In fact, these things have been introduced, he used to know, and he also understood, especially the principle of electromagnetic induction, because he thought it was amazing, he conducted a lot of research, as well as the manufacturing method of plastics!

He is obviously studying liberal arts, but he often reads physics books with his arms, and he was seen by the head teacher several times, and was severely criticized by the head teacher. Why, you like physics so much, why don't you study science? Zhang Chen is very entangled, in fact, he really likes science! It's just that his parents feel that there is a lot of pressure to compete in science, and those who study science have very good math scores. And if their son is studying liberal arts, then his math score will definitely be top-notch! In addition, the results in other subjects are not bad, in that case, it will definitely not be a problem to get into a better university! The main reason is that Zhang Chen's parents both teach Chinese and have a soft spot for liberal arts, so they want Zhang Chen to be able to take the liberal arts exam. Zhang Chen has been a good child since he was a child, and he will follow whatever his parents say.

It may be a matter of interest, Zhang Chen's grades in history, politics and geography are not very good. And that's what happened. When he took the college entrance examination, he only took a very ordinary university. If he was studying science, with his enthusiasm for all that mess, he might be able to get into a better university. However, Zhang Chen never blamed his parents, his parents' idea was right. Helplessness is all his own problem, if he studies hard in high school, I believe it will be good.

However, at this moment, Zhang Chen really regretted not studying science! In response to the magical saying, learn mathematics, physics and chemistry well. All over the world!

If his university major is in the study of chemical substances. Plastics? Can he fix something so weak?

Zhang Chen made up his mind that after he came out of this world, he must study more of this knowledge. will come to other worlds. This knowledge will be useful!

"Brother. The prince sent someone to invite his younger brother to come over! Pu Suxiu Shi Shiran walked in. looked at Zhang Chen and said softly. Thinking that Zhang Chen tied her to the bed last night, Pu Suxiu's little face turned red. I really don't understand, how can this little man come up with so many bad ideas! But. It was really exciting.

"Oh! Oh! Go now! Nodding, Zhang Chen responded. These days, Acting King Li Jian often visits his door. Seeing Li Jian, Zhang Chen thought of the tall princess Mu Bangxiang, such a good cabbage, why did the pig arch? What a shame!

Zhang Chen packed up his drawings and pencils, and washed his hands with the soap he had developed.

Qingxin Teahouse, the teahouse of the Yuan family, also has Zhang Chen's shares, and every time Li Jian will ask him to come here to drink tea. For Li Jian, Zhang Chen also understands, a prince who has no real power in his hands is nothing more than taking a fancy to him and now being a celebrity in front of the martial arts, and wants to get in touch with him and mix something from him!

However, when Zhang Chen rushed to Qingxin Teahouse this time, he did not meet Li Jian. Instead, he met the princess Mu Bangxiang who haunted him and thought about it all the time! With his current experience with women, he could be sure that this wooden incense must be a superlative, and if she was allowed to wear the tights and stockings he made, it would definitely be incredible, and it would definitely make all men squirt five liters of blood! Alas, but a little helpless, this woman is a princess. How could he convince that Li Jian to give this woman to him?

"Princess!" Zhang Chen shouted respectfully.

"Hehehe, Lord Zhang! The prince suddenly had something to leave, so he asked the concubine to greet Lord Zhang here! Master Zhang won't be surprised! Looking at Zhang Chen, Mu Bangxiang said with a smile.

Next to Mu Bangxiang, there was also a bearded middle-aged man, tall, wearing a fur hat and a big horned robe. Judging by his clothes and appearance, he should be a Hu person, but the Hu person who can stand with the princess Mu Bangxiang is definitely not an ordinary Hu person!

"Hehehe, the mother said that she laughed, how dare the lower officials be surprised!" Zhang Chen said with a smile. For him, seeing Mu Bangxiang is much happier than seeing that Li Jian! What's so good about that stupid B Li Jian? If it weren't for the fact that guy was a prince, Zhang Chen wouldn't want to deal with him!

"Hehehe, let me introduce to Master Zhang, this is His Royal Highness Prince Erdo, the crown prince of the Turkic Trimu Department!" Looking at Zhang Chen, Mu Bangxiang said with a smile. Then, he looked at the Hu man beside him and said softly: "His Royal Highness the Prince, this is Lord Zhang Hongyu Zhang, the secretary of Dali Temple in this dynasty!" ”

The crown prince of the Turkic Trimu? Zhang Chen was slightly startled. Even if he felt that the identity of this Hu man was not simple, he did not expect that he would be the prince of the Turkic tribe. Because in a few days, Zhang Chen will accompany Li Jian, no, take Li Jian to attend the birthday of the Great Khan of the People's Republic of China. Therefore, for the Turks, Zhang Chen also conducted some research.

The Turks are not like the Tang Dynasty, it is not a monolithic state, it is made up of fragmented tribes. The entire Turkic Empire, large and small, had dozens of tribes. The most ranked among all the tribes is the Tuobal tribe led by the Great Khan of the People's Republic of China, and the Tuobal tribe has 150,000 tiger divisions from the north and south, all of whom are brave and good at fighting and well-equipped. And secondly, there are the Trimu tribe, the Dudumu tribe, the Kunsha tribe, and the Jili wood tribe, these four major tribes, each with 50,000 soldiers. The most unstable of these tribes are the Trimu and Kunsha tribes, and the people of these two tribes are extremely warlike. For a long time, because of these two tribes, they have provoked continuous civil strife, and often sent troops to harass the common people of Dunhuang County in the Tang Dynasty. However, in the past two years, under the suppression of the Great Khan of Qimin, the two tribes have stabilized a lot.

And the prince, each tribe has its own prince, and it also has its own khan. And Qimin, as the head of the Turkic Empire, is called the Great Khan! Anyway. This Erdo is not a simple character, he is equivalent to a vassal king with a heavy army. Compared to that waste prince Li Jian, it's much more powerful!

"Oh, it's His Royal Highness the Crown Prince! Disrespectful, disrespectful! Stunned, looking at Erduo, Zhang Chen hurriedly hugged his fists. Needless to say, this princess invited herself over just to introduce herself to such a crown prince!

"Lord Zhang is polite!" Erdo hurriedly said. His Datang dialect is very good, and there is no difference between it and the Datang dialect spoken by the Datang people.

"Alright. His Royal Highness the Crown Prince and Lord Zhang have also met! Let's sit! Mu Bangxiang said with a smile.

"Princess. His Royal Highness the Crown Prince, please! Zhang Chen hurriedly greeted. Here, he's the boss too!

The three of them sat down, and Zhang Chen said with a smile: "I don't know what the princess and His Royal Highness the crown prince want to drink?" This is a pure heart teahouse. Several new milk teas have been introduced. If the princess and the crown prince are interested. Why don't you give it a try? ”

"Hahaha, interested, interested!" Erdoha laughed. "Don't hide it from Lord Zhang, Erduo came here as a businessman this time, and the purpose is to get these teas from Lord Zhang!"

"Oh! I don't know what His Royal Highness the Crown Prince said about this? Stunned, Zhang Chen asked with a smile. It seems that his tea has really spread farther and farther, and it has spread to the Turks.

"Erduo tasted Mr. Zhang's tea, and it felt very good! I wonder if Lord Lu Dao Zhang is interested in cooperating with Erduo to spread this tea to our Turks? Erduo can assure Master Zhang that once this tea reaches the Turks, it will definitely make a lot of money! Erduo looked at Zhang Chen and said with a smile.

"I really didn't expect that His Royal Highness the Crown Prince was also interested in these teas!" Zhang Chen said with a smile. After speaking, Zhang Chen waved his hand and asked the shopkeeper to serve tea. It's not a bad thing to spread these teas to the Turks! Now that there are so many family members, making money is the most important thing! If he had money, he would be able to give alms to the people, and he would be a good man himself!

The shopkeeper ran over and brought several kinds of tea, put them on the table, and a cup of sugar. Some people like to drink sweet, some people don't like sweet, so what you want to drink is up to the guests themselves. This initiative, of course, was conceived by Zhang Chen.

I have to say, after some days of operation. And all kinds of milk tea, black tea and juice tea have been carefully improved, and the business of this Qingxin Tea House is really good! Even Empress Wu is very fond of these teas, and will send someone to send some to the palace every day. Knowing that these teas were researched by Zhang Chen, Empress Wu was even more impressed by Zhang Chen. She really didn't look away, this Zhang Hongyu is indeed a talented person! Who would have thought of these things without being a great talent?

"Princess Niangniang, His Royal Highness the Prince, taste it first, let's talk while drinking!" Zhang Chen greeted with a smile.

Mu Wanxiang glanced at Zhang Chen, and her autumn-like eyes seemed to shine with a different meaning. And Erdo laughed and said, "Good, good! Erdo can't wait to try it! Erdo is a rough man, please don't be weird! ”

His Royal Highness the Crown Prince laughed! His Royal Highness the Crown Prince looks up to Zhang's tea so much, that is to look up to Zhang! If His Royal Highness the Crown Prince likes it, drink it to your heart's content! Zhang Chen said with a smile.

"Haha......" Erdo laughed heartily again.

Then, Erdo couldn't wait to pick up a cup of milk tea, put it on his nose and smell it, and then took a sip. And Mu Bangxiang also picked up a cup of black tea, picked up the spoon, put a small spoonful of sugar, stirred, glanced at Zhang Chen again, and took a sip.

And Zhang Chen didn't pay much attention to Mu Bangxiang, just looked at Erduo with a smile. I silently recited a sentence in my heart: Combat power value query.

Then, a string of red numbers appeared above Erdo's head: 975.

975？ Sure enough, he is a master! Of course, Zhang Chen did this, just to look at it casually, and had no other meaning. It can be seen that this Erdo is tall and extremely strong, and he should be a master. So, I want to see how much power this Erdo has. Because his strength, agility, and physique have each increased by 1 point, his current combat power value has finally exceeded 850.

Zhang Chen turned his head to look at Mu Bangxiang, and Mu Bangxiang was also looking at him, his autumn-like eyes seemed to be very meaningful. But Zhang Chen was stunned instantly! Because there is also a string of red numbers on the top of Mu Bangxiang's head, this string of numbers really made Zhang Chen stunned!

1133！ Oh my god! If he remembers correctly, this 1133 is the highest combat power value in this world! How is this possible? The strongest master in this world turned out to be a woman! Still such a beautiful, such a bewitching woman! The most outrageous thing is that she is still a princess!

In an instant, Zhang Chen didn't know what to say! This world is so crazy! However, Zhang Chen didn't think too much about it. Qiu Zhengshu's combat power value is also very high, and she is also the princess of the Eastern Island Country. It's just that he hasn't seen that this princess is also a master. Fortunately, on a whim, I checked Erdo's combat power value, and happened to find that this princess was a top master. If you really do what you think, sneak to the palace of the king, and if you can't get it, you really have no return! (To be continued......)