Da, da, da......

The night leaked three times, and the sound sounded extremely clear in the quiet night. It's the third watch, and it's eleven o'clock in the evening.

Xintianyou once again confirmed that the people near the small courtyard of the State Guesthouse were asleep and there was nothing suspicious. Dodge into the half-open hall and tie it up.

There is also a small reception room on the side of the hall, which is brightly lit. Wang Duan, the Shangshu of the Zhou State Rite Department, walked out of it, waved his hand and said, please!

Xintianyou smiled and walked in proudly.

I thought to myself, sure enough, Wang Duan drove away the servants, and did not sleep with the door half-closed, knowing that he would come.

During the arithmetic contest at the Taoli Banquet, the rest of the people were ignorant, but the two realized that they had a common secret. In particular, the problem of four-ball base is not something that the world can solve at all. Even if Xintianyou doesn't come to the State Guesthouse tonight, the other party will definitely try to find him.

Wang Duan walked quickly to the door of the hall and listened to the movement. Returning to the secret room again, he quickly closed the small door, and said eagerly:

"Comrade, I've been waiting so hard, it's been sixteen years......"

A "comrade", coupled with the outstretched hand, was like a thunderbolt in the clear sky, and Lei De Xintianyou was dizzy, scorched on the outside and tender on the inside.

Nima, am I dreaming and returning to the virtual realm? Or is Master Wang, like Master Xin, also from the high-tech era and accidentally mixed up with ancient spies?

Seeing the young man hesitantly stretching out his palm, Wang Duan held it tightly and shook it for a moment before letting go, and said apologetically:

"Leader, please be seated...... It's just that the tea is cold, and if you change the water, you have to call the next person ......"

Xintianyou sat down with a butt, and was so frightened by a "leader" that he almost jumped up. Reluctantly sat down, he took a drink from the teacup and suppressed the shock. took out a steady style and asked in a deep voice:

"The tea is good, no need to call it anymore...... Comrade, how have you worked hard all these years? ”

deliberately used an ambiguous word "dry", ready to set out Wang Duan's words.

Who knows, the old man saw that he drank the herbal tea unsuspectingly, and praised the word "hard work", so excited that he burst into tears, and immediately poured beans into the bamboo tube and said cleanly. Presumably, over the years, it has indeed been suffocated.

Twenty years ago, Wang Duan was just a seven-grade sesame official in Jieyun County, Zhou State. But he was obsessed with arithmetic and did not meet an opponent. has become quite famous, and even the Hanlin Academy knows that there is such a person.

Jieyun County is located in the tail tip of the northern part of the Yunshan region, bordering Huaguo across the mountains. It is poorer, but it is a land of nitrate.

Several nitrate miners suddenly developed and bought houses and shops in the county seat, which attracted the attention of the catchers. It is suspected that the money came from the wrong way, and perhaps he was killed for money.

After some cross-examination, the miner confessed.

One of their mines in the mountains was bought by out-of-town merchants last month. When he saw that the man was in a hurry, he opened his mouth and offered a high price of a thousand taels of silver. Unexpectedly, the other party immediately gave money and the deal was sold.

Again, what else is in the cave besides saltpeter? At such a high price, I am afraid that gold and silver will be produced.

He replied that there was only one small spring with black oil, except for saltpeter. It's thick, the smell is choking, it can't be lit, and it can't be used.

Something went wrong. Wang Duan felt strange and ordered the arrest to secretly investigate.

Suddenly, one day, an uninvited guest named Dong Jiu came to the county government and competed with him for an afternoon of arithmetic. No matter what question the king asks, the other party can answer it quickly. The other party's question, but he couldn't feel the wind at all, and he was shocked.

Only then did Dong Jiu tell that he was a foreign merchant who bought the nitrate.

The two became friends, and of course there was no need to investigate any more.

Nitrate crystal is a very common medicinal material, bitter taste, warm nature, the main treatment of detoxification and swelling. After refining saltpeter, Dongjiu never sold it in Jieyun County, saying that it could be sent to the north and made three times the profit.

Wang Duan didn't doubt it.

Because the local nitrate price is really cheap, all the ways are sent to other places. There is no way to sit and wait for the merchant to buy, and after some bargaining, the profit is extremely thin.

Dong Jiu gradually taught him some arithmetic and the principles of learning from things.

Each of them made Wang Duan, who almost won the champion exam that year, stunned. only when the other party is a wizard of the rivers and lakes, he is so impressed that he throws himself to the ground. But this knowledge was sternly admonished by Dong Jiu and should not be revealed in front of anyone.

Once, my mother had malaria, and I couldn't stop calling doctors all over the county. The condition is getting worse and worse, and I see that people are dying.

Dong Jiu arrived, and after the old lady fell unconscious, he ordered that only Wang Duan should be left alone in the room. Then he pulled out a strange needle and pushed the liquid into the blood vessels of his wrist sticking out of the mosquito net.

The next day, the old man was fine.

Wang Duan had nothing to reciprocate, regardless of the lowly status of the other party's "businessman", he must worship as brothers who live and die together.

Seeing that the time was ripe, Dong Jiu said:

"There are two fatal flaws in cultivating civilization for the purpose of cultivating super-strong individuals. The mundane world is suppressed, and the whole human race is not elevated. Relying too much on the Heaven and Earth Yuan Qi, once it disappears one day, it will not be able to cultivate. Fortunately, ten years ago, a 'mentor' descended from heaven to promulgate the teachings of 'science', and is preparing to build an ideal country in the land of abandonment.

"By illuminating the way forward with science, the laity can also move mountains and reclaim the sea, and live forever. Even the stars roam the universe, more powerful than the celestials. Wang Duan, are you willing to become our comrades and build human ideals together? “

Of course Wang Duan is willing.

He was mediocre and mixed in the world, and he could not appreciate the benefits of spiritual practice, but he really felt the magic of science.

Dong Jiu told another shocking secret.