As soon as I turned the street of Li Yan's courtyard, I saw that he was already waiting at the door. Seeing Abu and them coming, Li Yan took two steps and came out to greet them. Wu Ye jumped out first, Wu Ye had been very familiar with him in the past two days, and called his father-in-law, Li Yan responded, and stroked his head with a smile.

He helped Li Yuanlu get out of the car, and greeted each other while introducing each other. Abdo gave the two car owners some money, telling them that they could fill their stomachs now or do some more work, as long as they arrived at the end of the day, and the car owners happily agreed. Ali Mu thought about retiring first, but was stopped by Abu, saying that he didn't need to see outside, they were all his own people. Alimu was also clever, came into the house, and helped with this and that, without stopping for a while.

Under a large persimmon tree in the backyard, Li Yan had already set up tables and chairs, and a lot of food was placed on the table. Seasonal pomegranates, grapes, melons, walnuts and more are available, and delicious meals are served on the table. He is busy working alone, which shows that he has spent a lot of effort to enjoy the moon tonight. Abu thanked: "It's really a shame to let the eldest brother work so busy, but the younger brother didn't help with anything." ”

"Hehe, where is the virtuous brother, the fruits and drinks are ready-made, as for the meal, I don't dare to take credit, I found a nearby restaurant and asked the boss to cook it for me. Come on, come on, sit down, and taste it, isn't it delicious? ”

Everyone sat down separately, added a stool for Alimu, and sat next to Wu Ye. At Li Yan's invitation, everyone picked up chopsticks, ate and drank heartily.

According to age, Li Yan is three years older than Liu Yuanlu, and is called the eldest brother by Abu and the three people, Liu Yuanlu is the second brother, and Abu is the third.

As for Yun Niang, she was even more teased by the two brothers who were a little drunk, asking when they could drink their happy wine, and the shy Yun Niang's face was like red brocade, and there was nowhere to hide. And Abu sat there, stupidly counting the days with his fingers, saying that it was too late, and he would prepare for it when he returned. Yun Niang couldn't wait to go up and punch him twice, and everyone laughed.

Wu Ye couldn't sit still, so he ate some hastily, and he and Alimu each carried a bunch of grapes and ran to play.

At this time, the sky had darkened, the sky was beautiful, there was not a trace of clouds in the sky, and a big yellow moon had slowly climbed into the air. Li Yan said first: "If according to the rules of those literati, drinking is to carry out the wine order and compose poems, and our brothers will not engage in these vain and useless things, just show their own skills, or tell a joke, or sing a little song or something, how do you feel, everyone is good."

So Li Yan first took a pipa from the house and played a song "Shule Salt", which is a song widely circulated in Qiuci, salt is a kind of musical structure in Qiuci music, representing the meaning of fast beats. The rhythm of the music is bright and varied, the strings are like a storm, and the small strings are like spring water.

Li Yan's eyes were slightly closed, twisting and wiping, and the music came out with the strings, showing superb playing skills and profound attainments. Even Alimu and Wu Ye didn't know when they sneaked back, and sat quietly next to them to listen to Li Yan's playing.

After the song was played, everyone praised it with applause, and Abu praised it even more: "This song should only be in the sky, how many times can I hear it in the world." The eldest brother's technique has become extraordinary, and he has won the second of the rhythm. ”

Li Yan listened, waved his hand and said with a smile: "Brother Xian, don't make fun of me, look at your exports, according to your poetic talent, go to Chang'an City to ask for an errand, it should belong to exploring the bag and taking things, and you can bring it when you get it." ”

Abu secretly screamed in his heart, Lao Du couldn't help it, at this time, it should be that Lao Du's poem has not been circulated or written yet, so pay more attention in the future.

Yun Niang said: "Emperor Xuanzong has three brothers by his side, Li Pengnian, Li Henian, and Li Guinian, who are proficient in music, singing and dancing. ”

Liu Yuanlu responded: "I'm ashamed to say that I have been following my father in alchemy and medicine all these years, and I have paid less attention to other things, and I don't know anything about music and music, singing and dancing. But after listening to my eldest brother's playing, I always can't help but want to dance with it, if it weren't for my inconvenient legs, I guess I would have started dancing with it. ”

Abu said: "The second brother usually speaks rigorously and plainly, but I didn't expect to be so clever when it comes to compliments. ”

Everyone laughed together. Li Yan said: "Anyway, tonight's performance, the second brother can't escape." ”

Liu Yuanlu thought for a long time, and said with a bitter face: "Big brother, this is really embarrassing for me, so let's tell everyone about what I experienced during alchemy." ”

Li Yan responded: "Originally, I was happy, second brother, please say." ”

So Liu Yuanlu said that once when he was purifying saltpeter, he encountered trouble, because there were too many impurities in saltpeter, and after boiling the nitrate, the liquid obtained was still turbid.

Just when he was worried, suddenly the old hen laid eggs, and clucked, which means that I have laid eggs, you hurry up and give me some delicious food, and treat me.

So Liu Yuanlu went to find food for the old hen, and when he walked to the chicken coop, he suddenly found that the egg that had just been laid had a crack, which may have been accidentally trampled by the old hen, and some egg whites flowed out.

He suddenly had a flash of inspiration, the egg was broken anyway, throw it in the salt water and try it.

Something surprising happened, the originally turbid nitrate water, after adding egg white, became orderly and distinct, which made Liu Yuanlu overjoyed and fed the old hen a lot of delicious food.

Later, after many tests by him, he found that when purifying saltpeter, as long as egg white is added, and then the layered nitrate water crystallization can be used to obtain high-purity saltpeter, and then make high-strength nitric acid.

After finishing speaking, he found that everyone was looking at him blankly, Liu Yuanlu smiled embarrassedly: "It's really embarrassing, my eloquence is not good, and the story I tell is really boring, it's really ridiculous and generous." ”

Abu first applauded and said, "Second brother, don't be humble, do you know that you are really a genius." There is a saying: genius is the sweat of ninety-nine out of a hundred plus one-hundredth of inspiration, but without the inspiration of one-hundredth, ninety-nine of a hundred sweat is in vain.

To tell the truth, I have been trying to purify saltpeter before, but due to the turbidity of the nitrate, I could not extract high-purity saltpeter, and I have failed repeatedly.

Later, I really had no choice, so I traveled around the world, trying to find some natural high-purity saltpeter mines, but I found very little. I didn't expect the second brother to solve my problem with just egg whites. Admire, admire, admire. ”

After speaking, he gave Liu Yuanlu a deep salute, this time he was sincerely admired, and he had to accept it.

Liu Yuanlu didn't expect to be recognized so highly by Abu, but he still said happily: "It's great to help Brother Xian, and I'll communicate more with Brother Xian in the future." ”

Li Yan said: "The second brother has calculated this time, the third brother, it will be your turn next." ”

Abu looked at the moon in the sky, then looked at Yun Niang beside him, and said, "Today the wind is clear and the moon is bright, so I will sing a song about the moon." ”

Then came the singing of a somewhat muffled man:

You ask me how much I love you,

I love you a little,

My love is true,

My love is true,

The moon represents my heart,

……

A gentle kiss,

has touched my heart,

A deep love,

Teach me to think about it to this day,

……

Although it is a cappella, the lyrics are repeated three sighs, and the tune is euphemistic and moving; Straightforward and sincere.

In the bright moonlight, Abu's voice was clear and clean, and his quiet, delicate singing voice was like a trickle of water.

After Abu finished singing, Li Yan and Liu Yuanlu took the lead in applauding, and praised one after another.

Looking at Yun Niang again, Yue Ying's cheeks and lips were pursed, and she was already in tears.