More than 20 years ago, on the eve of the European War, a newspaper in Daming reported this:

"In recent years, the Thai industry has also been inventing new uses of tung oil...... Tung oil is mostly used for electrical appliances and wires, and the best paint in the United States used to use flaxseed oil in daily life, but now it is mostly prepared with rosin oil and tung oil......

As a major manufacturing country, the United States imports more than 60% of the total export of tung oil every year, that is, more than 60,000 tons. However, no one likes to be stuck, and they tried to plant them in Florida, but with little success, until last year, there were only 700,000 plants, which is better than nothing compared to their huge consumption.

For the old industrial country, the United Kingdom occupies the first place in Europe in terms of tung oil consumption, importing an average of 5 to 6,000 tons per year. London, Liverpool, and Glasgow, one of the world's shipbuilding bases, are the largest consumers of tung oil in the UK.

Secondly, in addition to tung oil, the humble bristle is also a very important strategic material.

Bristles are mainly used to make all kinds of brushes - daily brushes, paint brushes, mechanical brushes, etc., which are inconspicuous but indispensable.

Before the breakthrough of synthetic chemical fiber technology decades later, there was no material that could replace the role of the bristle brush, which has excellent toughness and elasticity, and is resistant to heat, acid and wear.

Aside from the conventional role of paint, in the military, guns, artillery, warplanes, automobiles, tanks and other mechanical products must not be cleaned and maintained, and the bristle brush is the best tool.

The problem is that although all countries in the world also produce it, it is not a competitor of Chinese bristles at all in terms of quality, and it is not a grade in terms of toughness, length, output and so on.

He doesn't have the ability to know, does he?

Nowadays, the world's annual demand for high-quality bristles is about 6,000 tons, and Daming exports about 5,000 tons every year, accounting for as much as eighty percent.

Finally, if tung oil and bristles are relatively inconspicuous, then tungsten is the most head-wrenching thing.

Needless to say, the performance of tungsten carbide armor-piercing projectiles is much higher than that of ordinary steel-core armor-piercing bullets.

For example, the Pak40 75mm anti-tank gun can penetrate 90mm vertical armor at 500m when fired by ordinary Pzgr39 armor-piercing shells, while Pzgr40 tungsten core armor-piercing shells can penetrate 120mm vertical armor at the same distance.

For a long time, in addition to the fact that a certain country can squander it as much as it wants, the precious tungsten resources are saved for the vast majority of countries.

All in all, the scarcity of tung oil, pig bristles, and tungsten sand, although it cannot paralyze an industrial country, is enough to disgust people.

In terms of restrictions on the export of strategic materials, the Ming Dynasty played a very slippery game hundreds of years ago - such as strictly controlling the sale of large iron pots to Mongolia.

As for the League of Nations, its full name is the League of Nations, which was established with the Treaty of Versailles to maintain world stability and settle international disputes peacefully.

The plenary assembly is composed of representatives of the member states, each with one vote, and now the five countries of Ming, Britain, France, Russia and Italy are permanent members; The General Assembly is held in Geneva every September.

In front of us, the two sides have been in fierce confrontation in the eastern foothills of the Himalayas, but in other parts of the world there has been surprisingly harmonious economic and trade operations, except for diplomatic condemnation.

The decision-makers of the Ming Dynasty unanimously agreed that the British would not show a substantive hardline attitude on this matter, and would only use a war of words to express their disobedience.

Although the monarch and the ministers are optimistic, it is still necessary to be fully prepared.

Therefore, on the next day, that is, on 9 July, the Admiralty of the Nanyang Fleet received a telegram from the Metropolitan Governor's Office to upgrade the combat readiness from the D class to the C class, and the submarine combat units that were about to go to sea in shifts were to leave the base with full ammunition.

At the same time, the "Taiweiyuan" aircraft carrier, which was preparing for routine overhaul in Guangzhou, suspended its overhaul work, and all the officers and men of the ship and the carrier-based aircraft wing stopped their vacation and immediately returned to the Zhanjiang base to stand by.

Early in the morning of the same day, Nanjing.

A torrential rain that began in the early hours of the morning washed the land clean, and put down the heat of the midsummer weather.

In the special prison of the Foreign Detective Factory, two agents followed a medium-sized officer.

Walking down the dark aisle to the end, turning a corner, the four of them finally stopped outside a cell.

When the door is opened, the deliberately unoiled door shaft makes a sharp "squeak" sound, which makes people's hearts hairy.

In the cell, Liu Wanyun, whose eyes were scattered, sat on the edge of the bed, her black hair was hastily tied into a bun with a wooden chopstick, her head was lowered, and she looked listless.

According to the rules, when the guards came in, the prisoner had to stand up straight, and when he saw that she was still sitting outside the bed and wandering objects, one of the guards shouted, "Stand up! ”

"Is it time?" Liu Wanyun, who was about to meet death, raised her eyes and glanced at it, and immediately noticed the abnormality.

If she was to be taken to be executed, just two random people could take her away, but a mid-level master appeared in front of him, and two retinues followed him.

Is there a turnaround?

"I've said everything I know, what else are you going to do......"

"It's quick, yes, it's smart." The interested principal looked her up and down a few times, "Do you want to live?" ”

Hearing this, Liu Wanyun, who was extremely happy, stared at the tall and thin young man in front of her, and nodded without thinking, "What do you need me to do?" ”

"My name is Shen Yu." The principal had a smile on his face, and said indifferently: "We want you to go back to England." ”

Double agent?

Liu Wanyun is stupid, are you kidding? Take MI6 for a fool?

Who will believe her when she goes back now, both teams are dead, and she is the only one who returns safely?

What's more, she had already sent back false information once before, saying that there were no reinforcements from the Ming army to go to Demagi, and the result?

"Statement." Shen Yu spit out two words.

"Wait, I ......"

As soon as Liu Wanyun opened her mouth to say a few words, the expressionless Shen Yu waved her hand, so the two agents accompanying him rushed forward, stuffed a lump of cloth into her mouth, and then forcibly dragged her out.

Liu Wanyun, who was whimpering, was taken out of the prison and came to a small open space at the back, and was immediately forced to kneel on the ground.

Shen Yu, who had a leisurely look, lit a cigarette for himself, took out a pistol at the same time, and slowly walked behind Liu Wanyun.

He spat out his cigarette and loaded the pistol with a "click".

I just wanted to ask a few questions first?! None of this is allowed?!

Liu Wanyun, who was extremely frightened, trembled, her sixth sense seemed to be extremely sharp at this moment, and she could feel the pistol against the back of her head a few inches away.

Her strong desire to survive made her burst out with far more strength than usual, and she struggled as hard as she could.

The two agents on her left and right were almost freed by her, and hurriedly subdued her.

"That's enough." Shen Yu waved his hand.

The two immediately let go of their hands and took out the cloth ball in Liu Wanyun's mouth by the way.

"Do you agree now?" Shen Yu, who was looking at the pistol, asked casually.

"With... Agree. Liu Wanyun's face was as white as paper because of the fear she had been before, and now it was flushed from the violent struggle just now, and she felt her heart beating wildly.