Founded in 1881, Jilin Machinery Bureau is the only modern arsenal in the northeast of the Qing Dynasty, all equipment is purchased from Britain and the United States, with the ability to produce gunpowder, explosives, bullets, rifles, and also has the ability to produce steamships.

After the Japanese occupied Jilin, they regarded the Jilin Machinery Bureau as one of the supply bases for weapons and ammunition, updated a large number of equipment, and by the time Japan retreated, it had the ability to produce 100,000 rounds of bullets, 1,000 artillery shells, and 10 steam river steamers per month.

Lin Fei ordered the troops to take over the Jilin Machinery Bureau, and after receiving it, he found more than 100 steam river ships, all of which belonged to the Japanese army, and the Japanese army mobilized 60 river ships from the rear in order to compete with the Russian army for the Songhua River, and let the Jilin Machinery Bureau build 40 ships to form a Songhua River fleet.

When the Songhua River fleet attacked Jilin, it did not play a role, because the Huaxia army came from the land, so the Japanese army reorganized all the sailors of the fleet into the army.

In addition to the preparation for crossing the river, the second point is the preparation of logistical supplies, at this time, the materials of the Huaxia Army were all transported from Taiwan and transported to Yingkou after being transferred, Yingkou is an important port in Shengjing, 150 kilometers away from Fengtian, the transportation distance is not far, but from Fengtian to Jilin, the distance has suddenly increased to more than 300 kilometers, the transportation distance has increased sharply, and the logistical pressure has increased sharply.

Fortunately, the Japanese built a railway from Mukden to Jilin - Fengji Railway, and the transportation of materials for the Huaxia Army was much more convenient, but when the Japanese retreated, the railway was seriously damaged, and it took about two months to repair the railway, that is, in these two months, the Huaxia Army could not cross the Songhua River and attack the Russians.

So Lin Fei ordered Li Mingming, commander-in-chief of the Northeast Front, to stop the attack, accumulate strength, and wait for the Fengji railway to be repaired before attacking the Russians.

It was July 1901, a year after the Eighteen Nations declared war on China, and in this year, the Chinese Army defeated the Japanese army, defeated the multinational coalition formed by the British to invade Yunnan, and also dealt a ferocious blow to the British in Burma, and even carried out a fierce bombing of the Japanese mainland.

Lin Fei began to think about the next direction of the march, to the north, the existence of the Mongol Empire has always been a trouble, although several princes of Inner Mongolia agreed to submit to the Chinese Empire, Inner Mongolia is enough to become a barrier against the attack of the Mongol Empire and Russia, but the control of the Chinese Empire over Inner Mongolia is not strong, once Russia and Mongolia attack, the princes of Inner Mongolia may turn against each other.

Since the Mongol Empire declared independence, Lin Fei has always claimed that Mongolia has been the territory of the Chinese Empire since ancient times, and no one is allowed to divide it, but Lin Fei has been saying that there is no actual action at all, which makes Lin Fei lose face.

If you want to attack the Mongol Empire, it is not so easy, because Mongolia has a large area, and the Russians are behind it, if you want to fight Mongolia, you have to start a full-scale war with Russia, Lin Fei plans not to attack Mongolia first.

To the east, the Huaxia Army is facing off with the Russian army across the Songhua River, and if it wants to attack the Russian army, it will need to wait until two months later.

The attitude of the Japanese troops stationed in South Korea was unclear, and they did not know when and where they would counterattack the Huaxia Army, and the Huaxia Army was not capable of attacking Korea for a while.

To the south, the battle between Burmese submarines and anti-submarines continues, and Lin Fei has put four of the latest Hell-class submarines into service.

Under the strangulation of submarines, the British colonial economy in Burma plummeted, and the capitalists who had huge interests in Burma suffered countless losses, and these capitalists desperately encouraged the British government to take tougher measures against the Chinese Empire.

However, there is another political force in Britain that suppresses the capitalists who have interests in Burma, that is, the capitalists who have interests in Africa and the Middle East, and this group of capitalists hopes that Britain will invest more military resources in the Middle East and Africa instead of Asia, and even advocates peaceful coexistence and equal trade with the Chinese Empire.

Later historians called this force the "Middle East faction", and the idea of the Middle East faction was supported by the British Royal Navy, which was the biggest victim of submarine warfare, and the world was shocked by the Battle of the Sulu Sea, in which the Chinese submarine sank a number of battleships of the British Royal Navy, so that the British Navy has always been afraid of the Chinese submarine.

The British Royal Navy has been developing sonar to find submarines, they did not want to risk attacking the Chinese Empire before the sonar was successfully developed, at this time the British Royal Navy also made a breakthrough in sonar technology, Pierre 61 Curie (is Marie Curie's husband, the discoverer of the piezoelectric effect, the piezoelectric effect is an important theoretical basis of sonar) organized a research team, designed a sonar scheme for the British Navy, and the British Navy is in full swing to turn the scheme into reality.

The British navy did not move, and in the land direction, Lin Fei did not attack Burma, because it was difficult to use troops on a large scale on the Burmese border, and the Chinese Empire was not prepared to occupy Burma and lacked understanding of the local customs and customs.

To the west, the Qing court remained.

Since the Huaxia army conquered Wuchang, Hanyang, Luoyang, and Kaifeng, the Qing court was pressed on the second ladder of China's topography, and only remote provinces such as Shaanxi, Shanxi, Sichuan, Ningxia, and Gansu were under its control.

The time when the Qing court was pressed on the second ladder was November 1900, and it was almost nine months since then, during these nine months, Lin Fei put the main force of the Huaxia Army on the confrontation with Japan and Russia, and did not use force against the Qing court, and the corrupt and incompetent Qing court did not have the ability to counterattack the Huaxia army, and the battle lines of the two sides were stalemate for a while.

Although the front is deadlocked, Lin Fei has not done anything less to prepare for the war, first of all, to promote grain production and realize the self-sufficiency of military grain for the Huaxia Army, which has already been achieved, and the grain in the Central Plains, the Lianghu region, and the Jiangsu and Zhejiang regions have obtained a bumper harvest, and the Huaxia Army stationed in the Qing State has not only achieved grain self-sufficiency, but can even transfer grain to the northeast region for the use of the Northeast Front Army.

After promoting grain production, Lin Fei ordered the Huaxia Army to recruit troops in all provinces of the Qing State, in order to achieve the goal of the Qing Army's Huaxia Army being completely composed of the Qing people, which is also of great significance.

This goal has been accomplished quite well, the Huaxia Army stationed in the Qing State, the troops composed of the native personnel of the Chinese Empire are only 20 percent, and the rest of the personnel are recruited from the Qing State, and the Huaxia Army composed of ordinary people recruited from the Qing State already has 20 divisions and 300,000 people, and these troops are stationed in various provinces of the Qing State, which is equivalent to the main division and garrison force of the Chinese Empire.

The last is the production of weapons and equipment, the newly recruited 300,000 troops need a large number of weapons and equipment, these weapons and equipment, can not rely on the factories of the Chinese Empire to produce, Lin Fei used the original military factories of the Qing State.

During this period, the Qing Dynasty established a number of military factories of considerable scale, which are famous in history, for example, Tianjin Machinery Bureau, Jilin Machinery Bureau, Jiangnan Manufacturing Bureau, Jinling Machinery Bureau, Fujian Shipbuilding Bureau, Hanyang Iron and Steel Plant, etc., although the equipment of these factories is relatively backward, but after all, there are workshops, technical personnel, and foundations, which are much stronger than Lin Fei building a new factory on vacant land.

Lin Fei sent technicians to improve the equipment and processes of these factories, and in nine months, these factories were reopened one after another, providing weapons and equipment for the newly formed Huaxia Army.

During these nine months, Lin Fei also relied on the personnel and equipment of the Chinese Empire to establish more than 50 factories in the coastal areas of the Qing Dynasty, including ironworks, steelworks, mechanical processing plants, chemical plants, etc., all of which were related to military production.

With the support of these factories, the newly formed Huaxia Army was equipped with LBQ-1 rifles, HP-1 60mm mortars, SLD-1 grenades and other weapons.

However, the artillery of the newly formed Huaxia Army is relatively weak, and only one division is equipped with fifteen HP-2 75 mm howitzers, and not HP-3 105 mm howitzers, this is because artillery is a technical branch, and it requires a lot of mathematical calculations when firing, and many of the Qing people are illiterate, and it takes a while to train artillery.

Lin Fei decided to launch a final battle against the Qing court, conquer Xi'an, and completely destroy the Qing court.

If Xi'an was captured by Lin Fei, then the Qing court would have to go into exile and completely become a regime in exile.

But if you want to conquer Xi'an, it is not easy, at this time the Chinese Empire occupied Luoyang, from Luoyang to Xi'an is the closest, if you do not take this route, you can also attack Shanxi first, march from Shanxi, or bypass Shanxi, march from the Loess Plateau in northern Shaanxi, the route is very long, the Chinese army can not bear.

From Luoyang to Xi'an, there is a dangerous pass in the middle - Tongguan, Tongguan is famous in Chinese history, during the Three Kingdoms period, Cao Cao wanted to take Guanzhong, but was blocked by Ma Chao and Han Sui in Tongguan; During the Anshi Rebellion of the Tang Dynasty, Geshuhan guarded Tongguan and was forced to go out to face the battle, and finally suffered a fiasco, Tongguan was broken, and Tang Xuanzong entered Shu in a hurry......

Tongguan is high mountains on both sides, there is only a narrow post road in the middle for passing, such a dangerous terrain, the poet saint Du Fu once wrote such a poem - "even the clouds are in the battle grid, the birds can not pass" "difficult to fight the halberd, with a husband for eternity".

No matter how corrupt and incompetent the Qing court was, they also knew that Tongguan was the only barrier to block the Huaxia army, so they sent heavy troops to guard Tongguan, and the generals who guarded Tongguan chose Yuan Shikai, Yuan Shikai was a brave general among the generals of the late Qing Dynasty, and he deployed his troops in Guancheng and the mountains on both sides, and it was almost impossible for the Huaxia army to conquer Tongguan.