Su Changqing just thought of this problem. Without cement in Datang, the ceramic tiles can't be pasted on the wall at all.

However, Li forgot to worry, but did not show any surprised expression as she imagined. Instead, he smiled and didn't speak. He directly moved out a bag of pottery powder that had been ground into powder by Li Heng.

"Well, there's cement. Hey, I've thought of this problem for a long time." Li forgot to worry and raised his eyebrows proudly.

"Isn't this the ground powder of the pottery? It can be used as cement?" Su Changqing said with an expression that you were teasing me.

Li Qieyou explained with a smile: "adding lime to mix is cement, which is called 'artificial pozzolanic cement'. It is to crush and grind the fired bricks and tiles or pottery, or directly calcine the lime and clay in the kiln. At the beginning, Yunnan Vietnam Railway was built with this kind of cement. When I couldn't buy Cement in my hometown countryside, I used this instead of cement."

"Really?" Su Changqing still didn't believe that ceramic chips could be ground into powder and used as cement with lime.

Without explanation, Li forgot to take lime directly, mix it with ceramic powder, and then add water to mix well.

When he was ready, Li Qieyou found a Mason and asked him to paste the tiles on the wall with his own cement.

"Little Lang, how can this be possible? I've been a bricklayer for most of my life, and I've never seen anyone who can stick bricks with mud." the bricklayer shook his head after hearing Li forgetful's request.

In his opinion, this kind of thing called ceramic tile by Li Qieyou can't be pasted on the wall like this.

Maybe you can try boiling glue with swim bladder, but it may not stick firmly.

When building walls and houses, they are mixed with loess, lime and water for bonding. It's just plaster with glutinous rice juice. What kind of "cement" Li Xiaolang asked him to use is unheard of.

At Li's repeated insistence, he tried to plaster the back of the ceramic tile with cement and gently stick the ceramic tile to the root of the wall. Gently tap the ceramic tile surface with the small hammer in your hand to make it more fit the wall.

After making sure that the tile was completely close to the wall, the Mason tried to release his hand. In his imagination, as soon as he took away his hand, it was estimated that the ceramic tile would fall down and smash.

After he loosened his hand, the ceramic tile remained motionless and firmly bonded to the wall.

"Well, how could this be possible?" the Mason had been building bricks for half his life, and it was beyond his imagination to see such a thing for the first time.

Li forgot to worry and smiled at Su Changqing. What does that mean? Is this cement easy to use?

Su Changqing gave him a white look, but his eyes were full of joy. He stared at the masons pasting bright and clean tiles on the wall

To the surprise of the masons, the cement can not only bond ceramic tiles, but also lay bricks.

Li Qieyou also ordered a cart of bricks, which are used to build biogas digesters.

Yes, the big round pit he had people dig in the backyard was a biogas digester.

However, the biogas digester needs to be surrounded by bricks so that the sewage will not penetrate into the soil.

The bricklaying is naturally the "artificial pozzolanic cement" made by Li forget worry.

Seeing that this thing called "cement" can really bond bricks, and it is obviously more viscous than the loess, lime and water they used to mix well for bonding, these masons were stunned.

Why does Xiao Lang of the Li family know everything? What a monster!

To their surprise, when they came back the next day, several masons found that the "cement" had solidified and dried yesterday. It is not only firm, but also water can't be poured in, just like turning into stone.

"Well, how is this possible?"

"The little gentleman of the Li family, he is indeed a Wenqu star from heaven. This is the means of the immortal family."

"That's right. Isn't it a fairy to turn mud into stone?"

Several craftsmen whispered around the cement wall, which was beyond their imagination.

The Li family's modern bathroom transformation plan is still in progress.

The first is water supply.

This problem is the easiest to solve. Carpenter Liu's two sons have good skills. In two days, they built pipes with moso bamboo and used wood as supports to introduce the spring water from the back mountain into Li forgetful's home.

The second is the sewage system. With the help of Li forgetful's cement, the craftsmen built the biogas digester in two days, laid the sewage pipe with ceramic pipe, and sealed all the joints with cement.

Then the modern bathroom of the West Wing room was built.

The floor and walls are pasted with ceramic tiles. After the ceramic toilet is installed, a modern bathroom appeared in Datang more than a thousand years ago.

Finally, the biogas utilization part of the biogas digester, that is, connecting the gas transmission pipeline. This biogas pipeline is Li forget worry's biggest headache. There is no PVC pipeline available in Datang.

Finally, he found a shop specializing in making copper in Huxian county. The old craftsman's craftsmanship was very exquisite. He actually made a batch of copper tubes for him with copper skin. However, the high price also made Li forget his worries and hurt his meat. It was a big bleeding.

It's normal to think that copper was originally money in the Tang Dynasty. Making copper tubes with copper is not much different from stringing copper coins.

Li Qieyou paid more than ten copper coins just to make these copper pipes. If Yang Zui hadn't given him a hundred copper coins, he would really hate to be so extravagant.

In recent days, the reconstruction project of Li forget worry's home is the biggest hot spot in the village.

Whether it's the farmer's man or his mother-in-law and aunt, they get together to discuss all kinds of Li's family.

Although it is not clear what Li forgets to worry about, it is a great thing for the farmers to think about it.

A few days later, the Li family has completely changed.

The front yard didn't change much. There was only one more bathroom, but it changed completely once you entered the backyard.

The mountain spring water from the back mountain flows into the home through the Moso bamboo. Some of them were forgotten by Li, who made people dig a canal in the backyard. The endless flow added a little vitality to the courtyard.

There is also a high wooden frame in the courtyard. A bamboo sends the spring water into a huge pottery pot on the top. After the earthenware jar is filled with spring water, the spring water injected into it flows down like a small waterfall.

This pottery pot was specially customized by Li Qieyou in the kiln factory for the purpose of storing water. Under the pottery pot is also a pipe made of bamboo, which extends to the kitchen of Li's house and the bathroom of the West Wing room.

The reason for setting this pottery pot to store water is to install a water valve on the bamboo pipe.

The Liu brothers have good skills. They skillfully made wooden water valves with wood and bamboo to control whether the water flows out of the bamboo pipe.

Only this water valve made Perrin have a lot of fun.

She kept opening and closing the water valve on the bamboo pipe on the sink in the kitchen. Watching the water flowing out of the bamboo pipe, she was happy to shout.

Li forgot his worries and looked at Su Changqing proudly, just like a child eager for praise.

Su Changqing proudly raised his swan like neck: "hum, it's not bad. Lead the way. The palace is going to see the bathroom."

"Scum, please come here, madam." Li forgets to worry about throwing off his clothes and robes. He is very servile and falsely supports Su Changqing to walk to the West Wing room.