The rest depends on God, in case Xu Xi can't wait for Xu Xi in Mizhi City, Fu Ji's camel team can't go directly to Yongle City to assassinate. After all, it is the front line, and it is not for anyone to go if they want to, and forcing it to approach will cause suspicion.

Hong Tao didn't leave that night, and still stayed in Fu Ji's cave. After sending away the false life, the two of them became teachers and students again as they had in the Horse Mansion. Hong Tao said that Fu Ji listened and recorded, and the word respect for each other was very appropriate for the two of them. She felt that such a polite and polite fit together was happiness, and no matter how much intimacy she was used to, she didn't like it.

But at night, Hong Tao is really not used to her, he must light a candle and make love, agree or disagree, anyway, what he says is the truth, even if Fu Ji is unwilling, he can only endure and endure. Who let her find such a husband, she did it herself.

To Hong Tao's surprise, Fu Ji's body scored much higher than her appearance. The skin is delicate and firm, and there is a small skeleton. It doesn't look fat, but it's full of meat, and it feels very good.

But in other respects, Fu Ji is more conservative than the eldest princess, don't try any tricks, it's useless to talk about it. As soon as Hong Tao glared, she covered her face and begged for mercy, full of admitting her mistakes but resolutely refusing to change!

Of course, Hong Tao was not reconciled, and wanted to launch a general attack again in the morning, but when he opened his eyes, there was no one around. Not only is Fu Ji gone, but Wang Da and Wang Er are also gone. There was an extra letter at the bedside, written by Fu Ji, saying that the clansmen had arrived, and in order to buy time, she took the camel caravan to Mizhi City.

"That's hiding! If you can run, the monk can't run to the temple, so I don't believe you won't come back! "Men are all cheap bones, and there is a lotus in Mawei City who is obedient and obedient, Hong Tao is not worried, but Fu Ji, who is unwilling to obey death, is interested, and follows the special forces on the sleigh with a crooked move.

Fu Ji's camel caravan moves very fast in the mountains, and can travel hundreds of miles a day if you are light, even if the mountains are covered by heavy snow, you can't stop the white camels born on the plateau.

It's a pity that the yield of this kind of camel is not high, and it doesn't have any explosive power, otherwise it would be a killer to get a camel cavalry and enter the hinterland of Western Xia in winter to harass.

As for Xu Xi's ending, Hong Tao felt that 80% of it was death. There are many guards of the Western Xia Emperor among the clansmen who are trying their best, and those guys are all selected from the elite troops of the Western Xia, and their riding and archery skills are first-class, and it is not difficult to shoot a big living person at close range.

Even if he misses one hit, there are still Wang Da and Wang Er's supplementary shots. As long as the clansman who finally tried his best to kill died, it was a mystery who fired the arrow, and Shen Kuo would not detain this crime on the family sent by the horse for no reason.

"Shhh...... Who did this? Back in Mawei City, Hong Tao just entered his room, and there was a burst of flowers in front of him, and there seemed to be a small sun in the room.

"Gao lame sent it, he said that the official asked him to do it. The official gave Wang Daxu to him, but he was not wronged, this guy has a pair of skillful hands, and the oil lamp made is bright, and even the lines on the paper can be seen clearly. Lian'er was writing behind a pile of official documents, and there was a lantern-like object on the table, and the white light emitted from it was extremely bright.

"You are not afraid of shaking your eyes, this thing must not be too close to the cloth and paper, be careful of walking away from the water." Hong Tao lifted the lamp, found a rope to hang on the beam, and tried the pump on it.

It's very smooth, and at first glance it is the craftsmanship of Wang Datou's apprentice. This old man is a little crazy, and he has to engrave the size of the big head to get a needle, for fear that the world will not know that he is good.

"In this way, the concubine can't read the words clearly...... "Lian'er is very unhappy, and finally has a bright light source to take it away, it's not coquettish, it's really not clear."

"You'll be blind in a few days! Close your eyes and open them after a while. Not to mention that Lian'er couldn't read clearly, Hong Tao himself was a little dazzled by this lamp. This is not myopia and blindness, but the self-protection of the eyes, the aperture is too small.

This lamp is not an ordinary oil lamp, nor is it a horse lamp, it is called a gas lamp. When Hong Tao first arrived in Zongcheng and saw asbestos, the first thing that came to mind was the gas lamp. But at that time, there was no glass, and gas lamps could not be made, but this idea has never been forgotten.

After having Gao Yu, the master who can blow, Hong Tao put the manufacture of gas lamps on the agenda again. Oil storage tanks, lamp stands, and pumps are all very easy to solve, and the rough kerosene is no problem, as long as Gao Yu blows out the glass lampshade, the light of the Northern Song Dynasty will come.

The brightness of the gas lamp is very high, and there is no data on how high Hong Tao is, but a hundred-watt incandescent lamp is like a firefly's ass in front of it.

A gas lamp can illuminate a small half of the football field when lit normally, and when I watched an open-air movie in Ditan Park, two gas lamps would be hung on the square, which was really bright!

In the absence of electricity and electric lights, this thing is the most convenient and effective lighting tool. But its scientific and technological content is not low, not with glass lampshade and kerosene can shine normally, but also need a relatively special raw material, called plutonium sulfate.

The gas lamp has no wick, and its luminous and burning parts are a fine net of asbestos thread. Whether it can be as bright as day is the key to the production process of this fine net.

It is necessary to soak the asbestos net with a plutonium sulfate solution, and use the radioactivity of the plutonium element to emit a snow-white glow after being subjected to high temperatures. Without this step, the gas lamp can only be used as a horse lamp, and the brightness is no different from that of an oil lamp, just because the glass lampshade is not afraid of the wind.

Plutonium, a radioactive element, can the technology of the Northern Song Dynasty mine radioactive elements? The answer is definitely no, without a series of instruments and reagents, let alone mining, how to determine the existence of this element is a problem.

But plutonium is a bit special, it will exist in the form of crystals in nature, as long as this crystal is found, and then dissolved with sulfuric acid, plutonium sulfate solution is available.

The crystals of plutonium are beautiful, yellow-green and translucent, and there is an oiliness on the surface. Europeans and Americans call it monazite, which means that it is never associated with other gemstones, and the production is very small.

Hong Tao once saw this crystallization while driving through Inner Mongolia, and the locals made it into various pendants and sold them as emeralds. This place was later called Baiyun Obo, just north of Baotou City.

It's a pity that this area is currently under the control of the Liao State, and Hong Tao can't directly get the monazite stone. But Fu Ji had a way, and she offered Xia Ren a high price to exchange the flower paste for this yellow-green gem.

Now the flower paste has become the preferred exchange material for the Xia people in Xining Prefecture, Lanzhou, Huizhou, Yan'an Prefecture, and Suide Army, and there are even Western Xia soldiers who pretend to be herdsmen to come to exchange.

There are more and more types of goods for mutual trade, war horses can be had, and even Western Xia armor can be obtained, as long as the flower paste is in hand, the other party will smile.

Xia people didn't take it back to smoke, they may not have summed up this extravagant practice, and the main thing about the flower ointment is medicinal at present. It does have special effects in analgesia, antidiarrheal, cough, dysmenorrhea, and detoxification.

But this kind of thing is a devil in the garb of an angel, a small dose, short-term use is medicine, a large dose, long-term use is poison.

Whether it is medicine or poison, it can be exchanged with a few broken stones, and the temptation is too great. Especially those poorer tribes, they couldn't get too many horses and camels, so they simply sent people to the border of Western Xia and Liao, and exchanged this kind of stone with the locals at a very low price to save it, and when Fu Ji's camel team came, the clan would have a magic medicine to use.

Hong Tao doesn't use too much monazite, the size of his finger belly can soak dozens of pieces of asbestos net, and the monazite stone that Fu Ji exchanged for has half a basket, even if it is not all monazite, it is enough to use it for a while.

The problem of sulfuric acid was solved in the Tiansha Temple in Huangzhou, which was obtained by dry distillation of bile alum, but the production of bile alum was too small, and the sulfuric acid produced was not enough.

So Hong Tao simply calcined nitrogen dioxide from the saltpeter, this dark red pungent gas is very useful, and after reacting with distilled water, nitric acid can be obtained, and sodium nitrate can be generated after reacting with caustic soda solution.

With the replacement of nitric acid, you can rely on dry distillation pyrite to obtain concentrated sulfuric acid, which has a large output and many sources of raw materials, which can be done with the technology of Weiqiao Town.