Video spoilers history, starting with the blitzkrieg on Poland

Outside the sky.

Qin Dynasty.

Ying Zheng naturally knew the power of winter.

I am also very curious about the heating methods used in later generations.

“Central heating?”

"Is it a wall of fire?"

"But can a firewall have such a good effect? ​​Can it be enjoyed by the people of a city or a state?"

Fusu, who had once guarded the border at the Great Wall, recalled the freezing cold weather at the Great Wall and speculated curiously:
"Could it be that they built a huge firewood pile in the city and gathered around it for warmth?"

"But that would affect my daily work and life too much, right?"

Li Si's guess is more reliable.

"I guess this centralized heating system might be to build a giant kang and then use a sophisticated mechanism to spread the heat everywhere."

"In the future, with advanced technology, perhaps we can cover the entire city with fiery energy."

Hearing Li Si's description.

Just imagine that the entire Xianyang city is shrouded in warmth.

Ying Zheng couldn't help but feel envious.

What a warm scene that would be!

"The northern border of Daqin is bitterly cold and indeed needs heating."

"If central heating is available in the future, hundreds of thousands of soldiers in the Great Wall Corps can enjoy it."

"Then the cost of maintaining the entire Great Wall defense line will be greatly reduced."

"It would be a good job to build the Great Wall for me."

And in the curiosity of ancient people of all generations.

A new sky appeared.

The camera slowly moves forward from the corner tower of the Forbidden City where snow is falling.

A melodious flute sounded in the background, interweaving with the hum of the city's pipes.

In the snow.

Hot steam rises.

A melodious commentary from the sky curtain sounded.

[Every winter, the heating system in the north becomes the focus of attention. ]

[The history of heating in northern my country can be traced back to a very early time. ]

[During the Qin and Han dynasties, the "fire wall" appeared. This method of heating, which built a hollow flue in the wall of a house and used the stove to circulate the hot air, created a warm environment for palaces and aristocratic mansions.]

[In the 20s, my country drew lessons from the Soviet model and gradually built a centralized heating system in northern cities.]

[Back in 1958, on the banks of the Yongding River, the first centralized heating pipeline in New China was laid here. ]

[At that time, Beijing still relied on coal stoves and heated beds for winter heating, and choking coal smoke drifted from the chimneys of thousands of households.]

[The thermal power plant technology brought by Soviet experts allowed the heating system to break through the limitations of single buildings for the first time, opening a new era of large-scale heat energy transmission.]

[In the early stage, the system mainly covers large state-owned enterprises, government agencies and some residential communities.]

【The heat source is a coal-fired boiler, and the heat is transported through hot water pipes. 】

[Although the scale of heating in the early stage was limited, it laid a solid foundation for subsequent development. ]

[After heating experience matures and national infrastructure level improves. ]

[Subsequent heating scale continues to expand. ]

[Areas in my country that are classified as severe cold and cold are all legal heating areas. 】

[Basically, it is bounded by the Qinling Mountains and the Huai River.]

[By 1980, 10 cities in the north had established centralized heating networks, spreading across the North China Plain like wildfire.]

【With the promulgation of the Heating Management Regulations in 1994, this thermal revolution entered the fast lane. 】

[From the banks of the Songhua River to the Loess Plateau, a heating pipe network with a total length that can circle half the equator is woven into a network underground. ]

【Isolate the severe cold of -30℃ from thousands of households. 】

[By the beginning of the new century, the heating area was expanding at a rate of 1.2 million square meters per year.]

[Eventually, a system covering 4 million people was built, the world's largest central heating system.]

……

At this time, some scenes after heating were played on the sky screen.

Can be seen in the freezing northern cities.

The residents were wearing thin clothes and walking around the room happily, without feeling cold at all.

This shows that the heating effect is outstanding.

It also made many ancient people envious after seeing it.

Tang Dynasty.

Li Longji saw the northern people in later generations, who stayed in their houses in the middle of winter, their faces red with heat.

I didn't want to wear any clothes. It was snowing heavily outside, but the room was like a furnace.

I couldn't help but say with some envy:
“Isn’t this heating effect too good?”

"My Huaqing Pool has taken great pains to keep it warm."

"But the results still don't satisfy me."

"I never expected that in later generations, the heating conditions in an ordinary citizen's home would be so excellent."

"What's even more terrifying is that the heating is not provided to every household."

"But how much would it cost to provide heating for the wealthy people throughout the north?"

"If you can heat my palace first, it will be comfortable."

"This way, I won't have to worry about the water being cold when I take a bath with my beloved in winter."

……

The sky continues.

[Different from the scattered fireplace culture in Europe and the high energy consumption electric heating system in North America. 】

[my country's centralized heating model shows distinct technical characteristics. ]

【By centrally constructing heat sources and laying pipelines, we can achieve large-scale heating, improve energy efficiency, and facilitate unified management and maintenance. 】

[As long as the heat source supply is stable, it can ensure continuous heating throughout the heating season and provide residents with a stable and warm environment. ]

[In addition, the heating period in northern my country is longer.]

[It usually lasts from mid-November to mid-March of the following year or even later, which is consistent with the long and cold winter climate in the north. ]

【And the heating system took decades to build. 】

[What is the effect? ​​]

[Medical research shows that the popularization of central heating has reduced the incidence of respiratory diseases in northern winter by 23% and the number of emergency visits for cardiovascular and cerebrovascular diseases by 18%.]

[In Changchun, the increase in heating network coverage is significantly negatively correlated with neonatal mortality;]

[Data from the Shijiazhuang Center for Disease Control and Prevention show that after the implementation of household metering, the average indoor temperature of residents in winter increased by 2.3°C, while heating energy consumption decreased by 15%.]

【It can be said that the results achieved are very obvious. 】

[Then the question is, since the heating effect is so good. 】

[Why is heating still only provided in the north? ]

[The main reason is that the investment cost is too high, and the energy consumption is relatively high. ]

[According to estimates, if cities along the Yangtze River are to be transformed to a level suitable for heating, the initial investment alone will require 6800 billion yuan.]

[The subsequent long-term transformation will cost an astronomical amount. ]

[And if you want to provide continuous heating at a relatively low cost, you have to burn coal so that companies can make money and the cost of heating for the people won’t be too high.]

[But using coal to heat hundreds of millions of people would indeed cause serious pollution.]

[So far, central heating in the south is still in the stage of small-scale independent pilot projects.]

……

The video basically ends here, and netizens’ comments are flying out.

"Because the cold weather in the south is only about three months, while in the north it is six months, short-term heating costs are high and unrealistic."

"There's no need for heating in the south, right? Turn on the air conditioner, or use a fire table if that doesn't work."

"Heat and air conditioning consume too much electricity."

"I'm so cold in Hubei!"

"Hehe, there is heating in Shiyan, Hubei."

"If Shiyan City didn't have Second Automobile Works, nobody would provide you with central heating, and the local communities in Shiyan didn't have heating back then."

"I went to Gansu during the Spring Festival. I was really amazed by the indoor environment. I could even sleep naked. It was so cool!"

"Now in the north, all new residential areas install their own wall-mounted boilers and heat the floor themselves, and they can heat it however they want."

"Many old residential areas and rural areas in the north are self-heated. "

"I'm from Zhejiang. Why do I need heating in this winter?"

"The temperature in Shanghai was minus 4 degrees Celsius the day before yesterday. I turned on the electric blanket in the air-conditioned room and hid in a 10-pound goose down quilt for a whole day..."

And the Tang Dynasty.

Du Fu saw the heating map on the sky.

Seeing the elderly and children who don’t have to worry about their homes being too cold in winter.

See their red faces.

Du Fu couldn't help but burst into tears.

I just felt like I saw my own ideal country.

"How can we heat thousands of houses and make all the poor people in the world happy!"

"The people will be spared from the bitter cold in winter and will be able to spend their days in warmth."

“This central heating is truly a great way to benefit all people!”

"If one were to write a poem to praise it, then only good governance like this in later generations would be worth writing a poem about!" (End of this chapter)