For young people, winter is just a matter of putting on one more piece of clothing.
But for the elderly, the New Year is really a life-threatening period.
It can be said to be a hurdle.
Most elderly people actually cannot survive the winter.
This was scientifically studied in later generations.
The mortality rate among the elderly is highest in winter.
Take keeping warm as an example, many elderly people cannot do it.
Even though Li Yuan was the emperor emeritus, he still couldn't guarantee it in that era.
Not to mention, there are millions of poor elderly people.
Although Zhuang Zhou was not a citizen of the Tang Dynasty, he could still feel Li Er's deep respect and concern for his father.
He thought for a moment and said:
"Your Majesty, perhaps I can think of a way to help the Emperor and the other elderly people get through this winter."
When Li Er heard this, he immediately put down the potatoes in his hand, with a glimmer of anticipation in his eyes:
"Oh? What can you do?"
Zhuang Zhou took a deep breath and said:
"I know some ways to keep warm that might be useful. It might not be very effective, but it could at least help."
After hearing this, Li Er's eyes flashed with joy:
"Oh, tell me about it!"
"It's hard to say for sure. Wait until I bring the things back tomorrow and you'll know!"
In later generations, there were many magical tools for heating in winter.
But since it requires electricity, it is naturally impossible to popularize it.
Most people simply can't afford it.
Now the first phase of the Lishan Power Station is only enough to provide the most basic lighting for Chang'an City.
But the heating artifact that Zhuang Zhou thought of was actually a hot water bottle.
Rubber products could not be made in this era.
Although the effect of hot water bottles is not long-lasting, they are an ancient way of keeping warm and can be reused.
Of course, the most important thing is affordability.
It was late at night, but the lights in the imperial study were brightly on and the conversation between the two continued.
Zhuang Zhou then began to talk about the achievements of later generations in education, science and technology, business, etc.
Li Er was fascinated by every achievement he heard.
He was sometimes amazed, sometimes lost in thought, as if he had already seen the infinite possibilities of the future of the Tang Dynasty.
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