"Your Highness is so laid-back. Pen ~ Fun ~ Pavilion www.biquge.info" The eldest grandson Wuji said with a smile.

"Lord Eldest Sun smiled, I'm lazy, I'm embarrassed." Li Su smiled.

The eldest grandson Wuji said: "The dog (eldest grandson Chong) and Princess An Ning already have a son, and the minister has also become a grandfather. Looking back on the events of that year, it still makes people feel palpitations. For this matter, the minister's family will always be grateful to His Highness. ”

Li Su said: "Your Excellency is polite. I wonder what you have to say when you come here today? He understood that the eldest grandson Wuji had never come here for this matter.

The eldest grandson Wuji said: "What do you think about the injury of His Royal Highness the Crown Prince? ”

Li Su said: "What is this? His Royal Highness the Crown Prince is benevolent and generous, what is the big deal about a little leg injury. Sun Bin was sentenced to death and death (cutting off Sun Bin's feet and tattooing on his face), and he did not finally defeat Pang Juan.

Similar examples abound.

The prince's brother is just a little bit of a leg disease, what is this? I firmly support the prince's brother. I am not satisfied with you and said that the main reason why I came back this time is for the prince's brother. ”

The eldest grandson Wuji stared at Li Su's eyes, wanting to see if his words were true or false. Li Su's face was sincere, and his eyes were clear and transparent.

The eldest grandson Wuji was very satisfied with his attitude and said, "Thank you Your Highness for your maintenance of His Royal Highness the Crown Prince." His Royal Highness the Crown Prince is under a lot of pressure, and I think it is best to help him make a great contribution, and it is closely related to the lives of the people, so that I can not only raise his prestige, but also lift his spirits.

However, I could not think of anything that could achieve such an effect, so I came to ask His Highness for advice. ”

Li Su said: "You came just in time, I have a credit for the prince's brother." ”

The eldest grandson Wuji was overjoyed and said, "What credit, let's hear about it?" ”

Li Su said: "Please wait a moment, after speaking, he opened the drawer on the desk, took out a booklet, and handed it to the eldest grandson Wuji." ”

After reading it, the eldest grandson Wuji was overjoyed, and he said, "Thank you, Your Highness." Such a great contribution to the benefit of the country and the people is really good. Thank you, Your Highness the Crown Prince. As he spoke, he stood up and bowed deeply.

Li Su hurriedly stood up and returned the salute, and said, "Your Excellency, you don't have to be polite, sharing worries for His Royal Highness the Crown Prince is what I should do." ”

After sending off the eldest grandson Wuji, Li Su found that his back was covered with cold sweat.

The eldest grandson Wuji plus the eldest grandson queen, and there are also Sun Shunde, the eldest prince of Pi Guoxiang, and others outside, and the power is too great. Once they recognize it as an enemy, it is basically dead. In history, Li Ke died at his hands.

Li Su is the son of Concubine Yang, which is a little embarrassing in itself. He had to be extra careful not to be targeted by the eldest grandson's family. Especially now that the crown prince's position is under threat, the eldest grandson's family is now eyeing everyone who may pose a threat to the prince.

What Li Su has to do now is to make a gesture of assisting Li Chengqian with all his might.

Besides, the eldest grandson Wuji is very satisfied with the harvest of this trip, and he is also satisfied with Li Su's attitude. However, Li Su's ability also made him deeply jealous.

Soon after, the crown prince Li Chengqian finally walked out of the East Palace, and he came to Li Shimin's study accompanied by his eldest grandson Wuji.

Li Shimin saw that Li Chengqian's mental state was good, and said: "This is very good, there is a little inconvenience in the legs, it is nothing." What an emperor needs most is a stoic character and a broad mind. ”

Li Chengqian said: "Father, my sons and daughters will follow your teachings, and from now on, cheer up and work hard to share the worries of my father." So saying, he took out a cloth bag, took out another piece of paper, spread it on the table, and poured out the contents of the cloth bag.

At this time, some fine white particles, almost transparent.

When Li Shimin saw it, he asked, "What is this?" ”

Li Chengqian said: "This is refined salt, which is processed on the basis of green salt. ”

"Ah, is this table salt? Such a good table salt is better than green salt! Fang Xuanling and the others present were surprised.

In the early Tang Dynasty, salt processing used seawater to dry salt, or used brine to dry salt in the interior to obtain coarse salt, which was the edible salt of ordinary people, and after many crystallizations, it could be made into green salt of better quality.

?? There are many impurities in coarse salt, containing a small amount of sediment, as well as a variety of compound impurities, and the taste is bitter. The green salt is better, and most of the sediment and other insoluble particles have been removed, but there is no way to solve the soluble compounds, and the taste is still bitter.

Under the guidance of Li Su's booklet, Li Chengqian used modern technology to make activated carbon from trees, filtered coarse salt, and then crystallized again to remove impurities such as sediment from coarse salt, and made refined salt used by modern people.

Li Shimin glued salt grains to his fingers, put them in his mouth to taste, and said in surprise: Good salt, hey, and fragrant! Everyone tasted it and praised it.

He asked: What is the yield of this refined salt?

The optimal temperature for the crystallization of table salt is 20 to 30 degrees Celsius, and the maximum yield is achieved under such conditions when the coarse salt is soaked in saturated salt water. The people of the Tang Dynasty did not understand these production techniques, and the output of green salt was not high.

Li Chengqian said: "The yield can be 5% higher than that of green salt. ”

Then, he pointed out that in addition to seawater salt, there are many salt mines in the Guanzhong area, which can produce salt in large quantities, and the salt problem in Datang is expected to be solved in a few years, and the price can drop from the current 80 wen a catty to about 15 wen a catty.

Datang has always had a very tight supply of salt, especially when natural disasters and transportation are blocked, and the price of a catty of salt is even as high as 400 yuan a catty. Many people could not afford to eat salt, so they used vinegar cloth to season it.

(Soak the ordinary cloth in vinegar and salt, and then you can make the vinegar cloth.) Front-line sergeants go on the march. Just bring a piece of such cloth with you while eating. Cut off a piece and cook it together with the rations. You can eat a meal with vinegar and salt. )

This is the credit that Li Su gave to Li Chengqian.

Soon, the imperial court announced the good news to the citizens of Chang'an, especially pointing out that it was the credit of the crown prince Li Chengqian. Li Chengqian won a lot of praise.

Li Su knew the trend of history, and he understood that Li Shimin was worried that his sons would learn from him and abolish the elders and establish the young, which would cause bloody battles, so he would not have to do it as a last resort, that is, as long as Li Chengqian did not rebel, he would not depose him as the crown prince.

Moreover, Li Shimin is still young, and the days are long, so it is too early to compete for the position of prince.

As for whether the crown prince Li Chengqian will die by himself, it will be seen later.

Therefore, what Li Su has to do now is to support Li Chengqian, be able to keep Li Chengqian, and let him resist the cold arrows from Li Ke and Li Tai. Also guard against blows from the eldest grandson's lineage.

Moreover, the blow of the eldest grandson is about to begin.