After Lin Liya assessed Mama Li, Mama Li passed Lin Li's assessment.

But Mama Li's salary has not risen, after all, there is still a big difference between the current job and the previous workload.

When Mama Li learned that she could stay, she was happy, and she didn't care about the salary in the first place.

For slaves like them, there is not much to spend when they have money, as long as they are not sold again.

Mama Li's matter was solved, but Lin Qiya still couldn't solve the matter of heating in the house, although I don't know when the winter in Jinyi City will come, but the sooner you can prepare, the better.

After doing a few experiments at home, Lin Qiya discovered the thermal conductivity of water, and then thought of the plumbing system in the north in her previous life, so that she finally found a way.

Based on the idea, she made a small plumbing system, and with this model-like thing, after some experimentation, it really worked.

It's just that it's too much firewood, but there is no way, in order to keep the whole winter warm, the firewood thing is not a difficult thing for people who have planted a lot of things in her space.

Since the experiment was successful, she expanded it to the scale of the small model and installed her plumbing system in the courtyards of the residents.

"Sister Xing'er, what's the use of Miss customizing so many of these things?" Zao'er saw Lin Qiya's invention for the first time, so she naturally asked curiously.

"Everything that Miss makes is useful, you just have to do what Miss tells you to do, and you don't care what you do."

"Isn't it curious, these can be filled with water, it's amazing."

"It's just to fill the water, otherwise the young lady won't let me try it one by one to see if there is any leakage."

"I just don't know what such a thing is going to do with water." Zao'er is still curious, after all, this is something she has never seen, so she is naturally curious.

However, looking at Xing'er's appearance, she may not know what this thing is used for, so a group of slaves can only obediently fill these things with water one by one according to Lin Qiya's instructions to see if they leak.

If you notice a water leak, you will send it back to the blacksmith and ask the other party to get it again.

After everything was gone, the people assembled it according to Lin Yuya's requirements.

The joints are also leak-proof, and this strange thing is installed in the yard of both residents and non-residents.

In an uninhabited yard, Lin Junya is ready to experiment again.

This transformation from a model to a real thing still has to be tried.

It's not completely cold yet, but it's still okay to try it out in a yard where no one is around.

After burning for a long time, slowly the radiators in the house also began to have a temperature, and over time, the radiators became hot, and the temperature in the house also rose significantly.

As soon as a person enters the house, they will sweat after a while, which is a sign that the temperature in the house has increased.

After the fire is extinguished, the temperature can be maintained for a while before slowly returning to normal.

"It seems to have succeeded, so that you don't need to change the kang, and you can have a warm winter, but this thing is too expensive for firewood." After Lin Qiya saw the results of the experiment, she couldn't help but sigh.

"Miss, rest assured, everyone in Jinyi City buys firewood, I'll go back and order a few firewood sellers, and let them send us firewood every day." During the time Lin Jiang came to Jinyi City, he had already figured out the situation in Jinyi City, so he had already inquired about this firewood.