Thank you for the "book four, nqm, kazuez, the other side of the river to watch, wish and wish three lives" reward, thank you for the support!

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Cao Yu was pulled into the house by Tang Yi, and this house has been basically completed.He found that there was also a cowhide pipe in the house that had received the roof, and was divided into several thin pipes from the roof and hung down.Under one of them stood a middle-age man with a glassware in his hand.

Cao Fu saw the man couldn't help but stupee...

“The authority?Why are you here?”

When the man turned back, he saw Cao Fu and hurried forward, “The old master is also coming?”

Cao Yu and Tang Yi are both in awe.

“How...knowing?”

Cao Fu smiled helplessly and pointed to Dong Quan: "This is the old craftsman in our Cao family's golden jade shop, how can I not know?"It is Da Lang, this is to set gold to the college, how to call the goldsmith here?"

Tang Yiyi said, "It's your own person, haha, that's right."

He did not say why he called the goldsmith here, but said to Dong Quan: “Have they all been loaded?”

"It's up, and you're going to come down Don's son himself."

“I’ll come.”With that, Tang Yi let the glazed utensils in Dongquan's hand pick the roof fixed and attached the cowhide pipe.

Cao Yu carefully looked at the glazed utensils a bit like hanging lantern flowers upside down, a copper plate in a circle with half a glazed ball, the ball can be seen inside is a porcelain column and then copper pipe, connected to the copper plate, and the kraft pipe together.

When the helper was ready, Tang Yi climbed the shelf, and when he was wringing the glazed ball in his hand, he unloaded the hood, and the original glazed hood and copper plate had a buckle, and he could unload it at once.

Give the mask to the man, take another yarn, lift it under the copper plate, and play it up.

That yarn is not only one of Tang Yi's hands, there are many, just on the edge.

Cao Yu picked up a fine look, that is, the net woven of cotton yarn, not large, but a barrel together.In addition to the openings up and down, the only difference is that the yarn network seems to be attached to a layer of gray slag, a touch of a hand.

Tang Yi tied one end of the yarn to the porcelain head and the other end tightly.

"All right!Take the pipe.”

There was a man over there to pull out the cork at the end of the pipe that came into the house and quickly received it from the pipe in the house.

I saw Tang Yi take over the fire wax in the hand of the helper, and directly pointed the yarn network that had just been put up...

A soft sound, I did not expect the fire is not small, almost put Tang Yi's hair on the face.

Tang Yi was also startled, hastened to mobilize a living door on the copper cover, and secretly said in his heart: "We are afraid that there is not enough pressure, I did not expect so enough!"

Cao Yu did not know, so I was wondering, this is the lamp?But not bright, what kind of light basket can the light fire shine?

But no, strange things came immediately...

The yarn net was completely blown by fire to a ball, but as the cotton yarn burned out, it was shrunk into a "grey bead", and then...

Then the light blue fire became white, and the bright was incomparable, so that people could not look directly!

Don’s happy, that’s it.

Turn the glass cover back and happily jump off the shelf.

“How about this light?”

Cao Yu looked at the glazed lamp on his head in amazement, and the heart said, how can it be so bright?Even if it can be so dazzling during the day, it is not possible to take the house like the day at that night.

“The end is magical!”

Tang Yi was naturally happy to praise, so that people put two glazed lamps on the roof.

Cao Ying stared at the glazed lamp, "This thing is good, back to let people put it on my house."

“Two hundred dollars, first the money!”

“Two hundred straights!” said Cao Fu, jumping straight to his feet.Tell me, why don’t you steal it!

“Extraorently?”Don Yishu said, "Two hundred is the price of friendship!"Do you know how hard it is for me to do this shit?”

For this broken lamp, Tang Yi really took the trouble... from the ship in Beijing to start thinking, until today to complete.

This lamp is placed in the future, as long as it has lived in the countryside, and everyone who has used the biogas tank knows that this is called a biogas lamp.The principle is simple, and the workmanship is not too complicated.However, in the big Song, that is simply a major technical problem, can get a big Song science and technology progress award.

The first is the problem of airtightness and pressure of the moor, Tang Yi found a mason, blacksmith and painter, specially built a waterproof and no leakage of the pool, using the outside of the biogas tank to add pressure to the way of water injection into the pool.

Then it is even more difficult, but also the longest problem of Tang Yi - the trachea.

This is no matter in the future, rubber pipes, plastic pipes all the streets, but in the Northern Song Dynasty it took a lot of effort.Tang Yi found a carpenter, a painter, acrometeor, a tailor, and finally found a gas-eclide material - the lining of the bovine intestine.

Using fish glued into a thin tube similar to a condom, a layer of soft cowhair on the outside to prevent damage, and then sealed a layer of paint, and finally made the now-used cowhair pipe.

After that, the body of the biogas lamp is made, and the glazed cover is ordered by the merchant who invited the big food.The porcelain sprinkler was Tang Yi's nest in the mountain porcelain kiln for five days, and the hand-hand kiln was burned out; and the precision parts such as copper pipes, living doors, and intake valves were found in the best goldsmith in Linjing, and were beaten by hand with a small butcher.Even that little net was specially made by weavers.

Counting down, this lamp used a mason, a blacksmith, a carpenter, a painter, acropenter, acrobat, a tailor, a goldsmith, a porcelain smith!

The craftsmen of the Great Song Dynasty have been used almost all the time!

...

Cao Yu is not so care about the price is not expensive, our uncle Cao Guo is not bad money!

Looking at the glazed lamp on the head, Cao Yu pondered that the lamp was still too simple, if the copper cover was replaced by gold, and then set with jade, the glazed cover was nothing special, and if it was better to paint...

This lamp has no smoke, but also amazing, it is simply designed for people who love to enjoy so much, in addition to the trouble of changing the oil every day.

Wait!

Cao Yu suddenly felt that it was wrong, what oil was changed, it was not a lamp to burn oil at all.

What is this light burning?

“Damn, what kind of baby is in that pool outside?”What is this light burning?”

“Baby?”Don laughed.

“Come with me, I’ll take you to see the baby!”

Then he led Cao to the back of another building, where another pool had not yet been ‘added’.

Before I did not know whether the biogas tank could work, Tang Yi only took a pool to test.Now that the light is on, the other pools can be added.

Cao Yi came closer and almost did not fumm with his head!I saw that the pool was all the disgusting things such as human and animal shit and scraping leftovers, which was simply stinking.

“This... this... it stinks too!”

Tang Yi hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey hey

Cao Yi was shocked: “Is this thing that the glazed light burns?”

"Not to mention, correctly, the biogas light is the 'stink' of these things."

“The smell?Can you smell the light?”

"That's right!These wastes add water, in the seal and at a certain temperature, will produce something similar to swamp miasma, so it is called biogas.And that's where the lights burn in the house."

Cao Fu interjected, “There is a lot of dung in this pool.”

The implication is, where do you get so much shit?The field is not enough fat.

Tang Yi waved his hand, "Don't be afraid, wait for a few days, everything recovers, what pig grass, straw, reed rod, wheat rod can replace feces."And the air volume is not bad than the feces, and the fat is greater!”

Cao Fu's eyes bright, he thought this thing is fattening, the original can accumulate fat.

“Yes, fat!In addition to lighting the lamp, this pool can also be used to burn fire, but also can accumulate fat.When the pool is finished, the rest is good fertilizer.”

“How long will this pool last?”

"About three months, considering the poor craft, there must be some loss, but if it is only used to light the lamp, three months should be no problem."

Cao Fu heard a good thought in his heart and gave Cao Qiao a look.

Cao Yi would smile and turn his face to Tang Yi: “Dahro... let’s do a pen business...”

...

Don laughed too...

He said, “Two hundred is not expensive.”