Li Er asked, "Ziyou, what do you mean by this? Can you explain it?"

Li forgot to worry and asked, "uncle, the Turks have surrendered to the heart of the Tang Dynasty. This is my uncle's great feat. But I don't know which country my uncle thinks will threaten the Tang Dynasty now?"

His words made Li Er and all the big men frown slightly. After a while, Li Er said, "in my opinion, the northern Koguryo will be the trouble of the Tang Dynasty in the future!"

Cheng Yaojin, Fang Xuanling and others also nodded one after another.

Koguryo was defeated in the three expeditions of the former Sui Dynasty, and finally returned home. The heads of countless Han soldiers were built into a Beijing Temple by Koguryo.

Even after the founding of the Tang Dynasty, the relationship between Koguryo and the Tang Dynasty was seemingly passable, but in fact, the kings and officials of the Tang Dynasty were thinking about another northern expedition to destroy Koguryo all the time.

In history, Li Er once personally enlisted Koguryo in the 19th year of Zhenguan.

After Emperor Taizong of the Tang Dynasty became emperor after the change of Xuanwu Gate, in addition to the 200000 cavalry to resist the eastern Turkic Jieli Khan, he personally led Gao Shilian and Fang Xuanling to the Weihe River, negotiated with Jieli Khan and signed the Weihe River Alliance. Besides, the expedition of Koguryo was the only Imperial expedition after he ascended the throne, which shows his attention to Koguryo.

"Liaodong is the land of China, but the Sui clan can't get it. I want to avenge my children for China and snow the shame of my father!"

This is what Emperor Taizong said before the imperial expedition in history.

Li forgets to worry but smiles and shakes his head: "uncle, gentlemen, from my nephew's point of view, Koguryo is nothing but a scab. The former Sui Dynasty did not levy Koguryo three times, but it is not how powerful Koguryo is, but the former Sui Dynasty made too many mistakes. In addition, it is difficult to supply food and grass, and the cold weather in Eastern Liaoning."

"Oh? Ziyou, how can you despise Koguryo so much?" Li Er was slightly unhappy when he heard the speech.

Li forgot to worry and quickly explained, "uncle, it's not that my nephew despises me, but that my Tang Dynasty is different from the former Sui Dynasty."

"What's the difference?"

"Did my uncle and the princes forget the four wheeled carriage? The four wheeled carriage alone can ensure that I have no worries about the food and grass of the iron cavalry of the Tang Dynasty. As for keeping out the cold in severe winter, that's not a problem. My nephew has his own way to solve it."

He smiled and looked at Li Er, Cheng Yaojin and others: "uncle, gentlemen, if I don't worry about food and grass and suffer from severe cold, as for the strong city of Koguryo..."

Li forgot to worry with a smile and pointed to the craters blasted by the explosive bag: "my nephew doesn't think that the walls of Gaogouli can withstand the earthquake and thunder. In this way, what does Gaogouli take to stop my Tang iron horse? My nephew doesn't believe that Gaogouli is still qualified to be my confidant of Datang!"

After he said this, Li Er and Cheng Yaojin were stunned.

What Li forgot to worry about said was something that everyone had never thought about before.

But when you think about it carefully, it makes sense.

"Wow, hahaha, Ziyou's right! With the help of this thunderbolt, Koguryo is nothing more than a local chicken and tile dog! Your majesty, if you want to attack Koguryo, I'll do my best! What nonsense is the head of King Koguryo? I'll cut it back for your majesty for the night!"

Li Er was bewildered by the old rascal Cheng Yaojin: "go away, what do I want the pickled goods for?"

He turned and looked at Li forgetful worry: "Ziyou, are you serious? Do you really have a way to protect the soldiers from the cold in winter?"

There was a big reason for the disastrous defeat of Koguryo in the three expeditions of the former Sui Dynasty, which was the severe cold weather in Eastern Liaoning.

During his first expedition to Liaodong, Yang Guang's expeditionary army claimed 2 million, but actually 1.3 million people went to Liaodong. However, due to the bad weather and unsustainable food and grass supply in Liaodong, coupled with Yang Guang's random command, the Sui army was defeated, lost 300000 troops, lost their helmets and returned.

It would be strange if Li forget worry could really solve the problem of keeping the army from the cold, coupled with sufficient food and grass supply and gunpowder.

Compared with the Tang army in history, today's Tang army is more powerful than ever because of the emergence of Li forgetful.

For example, the small horseshoe increased the number of war horses of the Tang army by at least 30%... The ordnance workshop in Cuiwei palace Valley kept making all kinds of armor and weapons with refined steel... The password letter made it more convenient for the Tang army to carefully transmit information... The emergence of penicillin and ambulance soldiers, It can reduce the casualties of Tang Army... Auspicious clothes and binoculars can make Tang army scouts feel at ease to detect the enemy's movements... Steel crossbows made of refined steel can hunt and kill enemy generals in millions of troops

The total of all this makes the Tang army incomparably strong in this time and space!

Li Er and others naturally don't know these things, but Li forget worry, a puppet army fan, can think of them.

Therefore, he did not think that Koguryo could become a stumbling block for the iron cavalry of the Tang Dynasty.

"Uncle, how can you make fun of such a thing?"

Li Qieyou shrugged his shoulders easily.

It's not difficult to keep out the cold. Just take Gaochang and plant a lot of cotton.

The role of cotton padded clothes in keeping out the cold is not inferior to that of animal fur. The key is that they are cheap and can be equipped in large quantities.

The Tang Dynasty just didn't know the benefits of cotton, otherwise Gaochang, these western countries, would not be destroyed by the Tang army until they got Zhenguan for 14 years.

"Good, good! If so, you should be the first to recover Liaodong!"

Li Er, Cheng Yaojin and others all laugh, and no one doubts Li forgetful's words.

For Cheng Yaojin and Yuchi Jingde, if they can't attack Koguryo, they can really find a piece of tofu and kill themselves.

After Li Er smiled, he asked again happily, "since Ziyou don't think Koguryo is a trouble in the heart of the Tang Dynasty, who are you talking about? Xue yantuo, West Turk or Tuyuhun?"

Li forgot to worry but didn't answer directly. He coughed very hard: "uncle, I've prepared something and I'm going to give it to my uncle. Would you please see it first and explain it to my uncle in detail?"

"But!" Li Er naturally agreed, and his heart was very curious.

They returned to Li's Castle again. Li forgot to worry and asked Li Er and others to wait a moment in the living room. He hurried to the study and took out something.

After taking it to the living room, Li forgot to worry and motioned all the servants and maidservants in the house to withdraw. Even the internal servants beside Li Er were asked by him to drive them out.

Seeing that Li forgot to worry so seriously, they knew that he was serious, so they were more curious about the things in his hands.

Needless to say, this thing must have been taught by the Taoist ancestors, otherwise Li forgetful would not be so nervous.

When all the idle people and others withdrew, Li forgot to worry and slowly unfolded the things in his hand, but it attracted everyone in the living room, including Li Er, with a cry of surprise