Presbyopia is not a problem that all patients will have when they get older, but myopia is different. It is usually caused by overuse of the eyes and has existed since ancient times. For example, everyone likes to draw Mr. Du in the textbook.

Glasses, that is definitely not a joke, he is short-sighted, otherwise he would never be able to write the famous line "The bright moonlight outside the window is probably frost on the ground", and everyone did this just to show their respect.

'Study hard for ten years and pass the exam in one fell swoop' was the wish of every scholar in ancient times, so studying under the lamp was inevitable. But there were no electric lights at that time, and before paraffin became popular, candles were made of beeswax.

The price of each stick is as high as several hundred liters. If you light up a few sticks in a night, you will lose a month's living expenses. Therefore, reading under a dim oil lamp is the norm. Myopia is also common among scholars, so Deng Guang recommended it.

is one of the victims.

Zhao Bing gave the telescope he brought from his previous life to his wife. In fact, he still felt very sad, but he could not get it back after he had spoken out his words as a majestic prince, so he always thought about making another one, but in this era, the Song Dynasty still had

Since we can't make glass, we can only put it aside for the time being. This problem was solved after I found crystal in a jewelry store today.

After watching the jeweler grinding two pairs of lenses, Zhao Bing suddenly remembered the two masters. One suffered from farsightedness, but had to review official documents for him day and night; the other suffered from myopia and wished he could

The books were stuck to his face, but he still "tirelessly" taught himself. So he asked the craftsmen to grind several pairs of lenses respectively, and made frames, and made a pair of glasses for each of them...

"Sir, let me take a look!" Zhao Bing is also a person who has worn glasses, and he immediately knew what the problem with Deng Guangjian was. There was no optometry equipment in this era, and he estimated the power of the glasses. Reading glasses were easy to deal with.

Both large and small ones are fine. However, myopia glasses are not suitable. If the interpupillary distance and power are not suitable, you will definitely get dizzy.

"Your Highness, this is okay." After trying on another pair, Deng Guangjian finally stopped feeling dizzy and said with satisfaction. This means that Zhao Bing was prepared and made two more pairs with different degrees, but the same style.

The lenses can be exchanged with each other. After struggling for a while, I finally got a pair that can be used.

"Thank you, Your Highness, I finally no longer suffer from eye problems!" Ying Jieyan saw that the two of them had finished their work and bowed and thanked them.

"Sir, you have worked hard for the country and devoted yourself to helping the students. It is only right for me to do this." Zhao Bing hurriedly returned the courtesy.

"Alas. Your Highness is really smart. He actually came up with this method to treat eye diseases. I have taken so many pills and it has never had any effect. It seems that Your Highness is really talented as a healer." Deng Guangjian also rarely praised His Highness in person.

Fan.

"Sir, I praise you, but students don't dare. As long as you don't get angry about me leaving the house privately today, it will be fine." Zhao Bing said with a smile.

"Your Highness..." If someone is short-tongued and short-handed, it is not convenient to pursue the benefits of strict discipline. I just sigh that this child is too cunning and accidentally got his way, "Your Highness, what's going on in Qiongzhou?"

Wonderful idea?" He could only continue talking about what happened just now.

"Two gentlemen, this is what I have thought about..." Zhao Bing then explained the plan he had been thinking about for many days. "With the current situation, the Mongols will never give up the strategy of unifying the country. Sooner or later, there will be a war in Qiongzhou.

War is inevitable."

"Your Highness, now that the enemy troops have returned to the north, the situation has slowed down a bit. I recently heard that Prime Minister Wen has reorganized his troops and left Jiangxi from Meizhou to recapture Huichang. Volunteer soldiers from all over Fuguang have joined forces. The imperial troops are also approaching Guangdong in an attempt to recapture the states and counties.

, there is nothing wrong with restoring the whole of Jiangnan!" Deng Guangjian disagreed.

"Sir, now the thieves chief has firmly established himself in the Central Plains, and all the kings respect him as the Khan. The civil strife will be settled soon. And there are large troops stationed in the important towns in the south of the Yangtze River, so they can be guaranteed. Even if our dynasty can temporarily regain some states and counties, it will not be lost.

The stars are falling in various places, and they are doing their own things, and there is no unified dispatch and command. As long as the enemy troops go south again, they will instantly fall apart and fall into the enemy's hands again. In order to seek long-term peace and stability, the bandit chief will go south this time to put down the beacon fires in various places and try his best to hunt down the relics of our dynasty.

Sir, it will be a life-and-death situation, and our imperial court is weak, and it will be difficult for us to gain a foothold on the mainland, and Qiongzhou will inevitably have a war!" Zhao Bing said, after regaining Guangzhou, not only Deng Guangjian but also many people in the government had the same idea

Blindly optimistic, I thought I no longer had to go to Qiongzhou and wanted to stay in Guangzhou.

"Your Highness thinks it's just a flash in the pan?" Deng Guangjian said with doubts.

"Exactly, His Highness's efforts in running Qiongzhou are to protect the last territory for the imperial court and leave a place for revival." Ying Jieyan said.

"In this case, it is inconvenient for me to say more," Deng Guang recommended, but he still reserved his opinion.

"I think the defense of Qiongzhou lies in the danger of the sea, and the most important danger lies in the strait. Do you two gentlemen think that is right?" Zhao Bing said again.

"Well, that's right!" Ying Jieyan said, "Using the sea as a chasm and relying on danger to hold on is the best strategy."

"Otherwise, I think it would be better to defend the strait and fight decisively at sea. But now our commander's army is short of warships and the navy has not been trained and cannot be used yet. But the war is approaching, so it is a last resort to focus on defense instead of attack." Zhao

Bing pointed to the map and said, "To defend Qiongzhou, you must defend Baisha. This is the mouth of the Nandu River. If you capture Baisha, you can go upstream and take the city directly, deep into the hinterland of the island, and other cities will collapse instantly."

"What your Highness said is true. Leizhou is only forty miles away from Qiongzhou. It only takes half a day to get to Shenying Port with favorable winds and rivers. Large boats can be parked here, which is convenient for landing on the island. It is the right place for troops. Your Highness wants to be here."

Build a stronghold and resist the enemy at sea?" Ying Jieyan fully agreed with His Highness's view. When coming to the island from the mainland, they usually disembark at Shenying Port and then enter the island.

Leizhou on the other side of the strait is shaped like a peninsula and is surrounded by enemies on all sides. It is difficult to resist the enemy's siege. However, Shenying Port is fifty miles away from Fuzhifu City in Qiongzhou, and there is no danger to defend. If the enemy fleet crosses the strait and lands on the mainland, it can be controlled.

The port will continuously send soldiers and baggage to the island. At that time, they can use the advantage of the cavalry to quickly raid the states and counties, or they can use heavy troops to siege the city and further open the passage south.

After our army lost its natural cover, it was difficult to resist the enemy. It had to either defend continuously and consume the enemy's troops, or retreat into the mountains to unite with various villages to deal with the enemy. However, the current situation in the army cannot last long, and it is bound to be defeated by the enemy one by one.

Li Dong has always been at odds with the imperial court, and whether they can cooperate is a problem. We must also be wary of them colluding with the enemy to betray themselves. Therefore, it is a good strategy to defend the strait to resist the enemy at sea and prevent them from landing.

"Sir, I think there is no doubt that the stronghold will be built, but Shenying Port should not be the main focus, but the fortified city here!" Zhao Bing clicked on the map.
Chapter completed!