A quilt and a cotton coat are Li Yuanjia's gift to Zhang Cambodia.

These two things...... It is really worth saying that it is worth money, after all, in today's Datang, except for a very small number of people who come to watch, there is only one hundred acres of planting in Hanwangfu every year, which is much more expensive than silk according to the principle of scarcity as expensive. But on the other hand, because of the existence of silk cotton and silk, for people who don't know the historical status of cotton, the value of this thing is definitely not comparable to that of silk cotton.

But for Zhang Cambodia, the meaning of these two things is very different!

In any case, this is something that King Han gave to himself, for a too student, not to mention that he must be grateful, he must at least show enough attention to it like treating the emperor's gifts!

So for Li Yuanjia's suggestion that he must try it in winter, Zhang Cambodia naturally nodded his head like a chicken pecking rice - the weather in Chang'an has cooled down, and there is just an extra cotton coat and a quilt, and Zhang Cambodia is also very happy inside.

After studying in King Han's Zhuangzi for a few more days, Zhang Cambodia went back in a hurry.

He didn't care about cotton clothes and quilts, but after studying with Han Wang for a few days, Zhang Cambodia's understanding of Tianzhu numbers and mathematics went further...... In fact, because his foundation is good and his understanding is strong enough, Li Yuanjia has taught him a lot of things in the past few days. Especially in the last two days, he even taught Zhang Cambodia the concept and expression of positive and negative numbers on the grounds of "the latest thought"!

In the era when Li Yuanjia went to school in the previous life, positive and negative numbers were the knowledge content of the first year of junior high school.

And in addition to mathematics, there are also the most basic concepts of standardization, as well as the most primitive assembly line based on standardization - strictly speaking, the dumping workshop is not actually an assembly line, but only realizes the basic standardization, but this does not prevent Li Yuanjia from instilling these things into Zhang Cambodia's brain.

As for what the results are......

"If you plant a seed, you will see if it grows!"

Sitting on the carriage and listening to the sound of wheels turning outside, Li Yuanjia's thoughts couldn't help but diverge, and he had a little expectation in his heart.

Large-scale promotion of Tianzhu numbers is certainly unrealistic, otherwise this thing would not have waited until the twentieth century to be accepted by the Chinese. However, small-scale use, such as trying to use it first in places such as the Han Wangfu, the Yingguo Mansion, and the Wei Wangfu, has already begun.

And the future famous minister Zhang Cambodia is not even Li Yuanjia's foreshadowing, it is just an accident......

"My lord, I'm home."

Just when Li Yuanjia was full of thoughts, the voice of the housekeeper Han Lucheng came from outside the car window, and then the sound of the car wheeling gradually stopped.

"Hmm."

Li Yuanjia nodded casually, ready to wait for the car to stop before going down, but ......

"Haha! Brother-in-law, you're back! ”

"Huh?"

Hearing this voice, which was quite familiar, but had not been heard for a long time, Li Yuanjia was stunned for a moment. Hurriedly lifted the curtain on the carriage, and Li Yuanjia saw a young and familiar face at a glance!

Blinking his eyes, Li Yuanjia said in surprise: "Love? How did you get back? ”

"Your Majesty is about to return to the palace, so we will take the first step."

After the luggage, he replied to Li Yuanjia first, and then his brother-in-law Fang Jun circled around the carriage and said excitedly: "Brother-in-law, I have already finished learning the six math books here, where is the carriage you asked me to make?" I've been looking forward to it for a long time......"

……

"Brother-in-law, my carriage ......"

"Alright, shut up! Dine! ”

When Fang Jun asked about his carriage again at the dinner table, Fang Fengzhu, who was immersed in the joy of the king finally returning home, finally couldn't help it, glared at his younger brother fiercely, and shouted angrily: "Do you believe it or not?" If you dare to ask again, I'll have someone smash that carriage?! ”

"Gollum ......"

After swallowing his saliva, Fang Jun immediately closed his mouth.

I'm scared!

Although he is not particularly afraid of his sister, Fang Jun is really afraid that Fang Fengzhu will really smash the carriage in anger, so what he has been looking forward to for almost half a year will not be disappointed? You know, Fang Jun has been bragging in front of his friends for a long time, if the carriage is really gone, how can he go out and pretend to be forced?

So no matter how unhappy he was, this kid could only bite his lip and bury his head and start eating.

It's just that he is honest here, but his sister refuses to let him go easily, and then said angrily: "You are also a person who is about to get married, and you are still married to Princess Gaoyang, why are you still so unstable...... When the two of you become married, you will be adults in the future, and Your Majesty will definitely give you an official position...... Let's go, let's ......."

“……”

Fang Fengzhu's words, the younger brother who said rolled his eyes, and Li Yuanjia was also a little helpless.

To be honest, Li Yuanjia really wanted to dissuade his princess, after all, Fang Jun is only a teenager now, and it is the time to rebel, even if Fang Jun is the son of Liang Guogong Fang Xuanling? Whether you should be unconvinced or unconvinced, whether you should listen or not, it is actually useless to talk too much.

But after hesitating for a while, Li Yuanjia also closed his mouth.

Can't afford to mess with it!

However, Fang Fengzhu's age is not very old after all, so it will stop after talking for a while, and then Li Yuanjia seized the opportunity to ask with a smile: "Bereavement, when has your marriage with Gao Yang been postponed?" ”

"Hey, next February."

Speaking of his marriage, even Fang Jun felt a little embarrassed, and replied with a little twist.

Because of the drought this year, the marriage between the two was naturally postponed...... If it were an ordinary person, it wouldn't be enough, but Gao Yang, as a royal princess, had nothing to talk about in this regard, and Li Shimin made up his mind as soon as he gave the order.

So after the only groan, Li Yuanjia said with a smile: "Then that's it, your carriage will be used again on the wedding day, how about it?" ”

"Huh? All right! ”

After listening to his brother-in-law's words, his eyes suddenly lit up, and Fang Jun nodded busily.

That's right!

What's the fun of getting that carriage in your hands now? At most, it's just pretending to be in front of my friends, but when I take it out on my wedding day, tsk......

What a long face!

After seeing Fang Jun's excited appearance, Li Yuanjia suddenly remembered another thing, and immediately blinked his eyes and smiled: "It's just right...... Beloved, I'll send you back when the time comes...... Well, to be precise, it should be another good thing for Gao Yang, and when the time comes, she complains that my uncle only prepared a gift for you, and forgot about her niece......"