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But in this time and space, due to the investment attracted by Ford and the special attention of Hu Weidong, China can now produce almost all types of heavy machinery, and with them to gnaw the hard bones in the project, Hu Weidong's idea has the possibility to be realized

For example, Hongze Lake does not need to disappear completely, and several deep parts of the lake can be preserved to form smaller lakes, so that on the one hand, the amount of work can be reduced, and on the other hand, these small lakes that have the characteristics of natural lakes can be fully utilized due to disasters to benefit the people of Lianghuai, which is equivalent to a natural reservoir. Although Hu Weidong is not a water conservancy professional, he also knows a common sense, as long as it is not a strange thing like Hongze Lake, the larger the water area, the milder the climate, which means that the probability of good weather is greater and the possibility of flood and drought disasters is less likely for agriculture, so he quickly agreed to this proposal.

After listening to Hu Weidong's report, Taizu was very supportive of his idea, and asked him to let go of it, and happily wrote an inscription for the Huai River control project: "We must repair the Huai River!" ”

Hu Weidong was well aware that with the amount of heavy machinery China currently possessed, it would be barely used to dig even the main river downstream, so it was essential to mobilize the masses widely. In order to build water conservancy and cure the Huai River, the victims who fled abroad have returned to their homes one after another, and automatically asked for water control equipment. Repair the ship, prepare to transport materials, grain and grass. "Fathers and sons go into battle together, brothers compete for registration, women do not show weakness, and husbands and wives go out together." Three million peasants have joined the ranks of harnessing the Huai River, and millions of workers and peasants have been running day and night on the transportation lines of the Huai River, which stretch thousands of miles.

The central government from the Northeast, North China, Central and South provinces transferred millions of tons of construction materials, a large number of engineering personnel, as well as almost all the country's large excavators, including Taizu including the central leadership of the many visits to the Huai River governance of the front line inspection, the great man and the Party Central Committee so care for the Huai River project, to the construction site migrant workers injected infinite spirit liliang. They ate coarse tea and light rice, and lived in the most humble straw huts. The pay is very meager. But they don't care. They did not rest for several days and nights, and when they were sick or injured, the leaders could not drive them out of the construction site without giving orders, and many of them even sacrificed their precious lives for the project. Hu Weidong was also deeply saddened by this, but in order to seize time with the Western powers to achieve industrialization as soon as possible. China must do the most with the least amount of money. There are no huge sacrifices to be made for this. It's simply not possible

After a year of hard work, the main stream of the Huai River, which is close in width and depth to the main channel of the lower reaches of the Yellow River, and the embankments on both sides of it were miraculously built, when it was connected to Hongze Lake. The water that had been blocked for many years in this harmful lake suddenly poured out downstream, and the scene was extremely spectacular.

After restoring the main stream of the lower reaches of the Huai River and allowing the water of Hongze Lake to be exported, the project entered the second stage. At this stage, there are two main priorities: one is to enclose the lake to create farmland, on the one hand, to increase the area of cultivated land, on the other hand, to reduce the area of Hongze Lake, and at the same time, by the way, to level the land, so that it can be built into a mechanized state farm; Second, it is necessary to extensively build diversion canals and small reservoirs, develop irrigated agriculture, and ensure that the cultivated land in the three provinces can be harvested from drought and flood as soon as possible. These works took longer than the excavation of the main channel, and it was not until five years later that the Lianghuai Plain became one of China's most important commercial grain bases

The rapid change of water area will lead to abnormal climate in this area in a short period of time, so until the early fifties, the flood and drought disasters in the Lianghuai Plain (referring to too much or too little precipitation, not based on the economic losses caused by it, otherwise in any case it will not be comparable to the "heavy rain, light rain, no rain drought" before the Huai River control). On the contrary, there are more of them, but because of the control of the Huai River and the fact that the rural cooperative system is conducive to disaster prevention and relief, agricultural production in the Lianghuai Plain has not been greatly affected, and even bumper harvests have been harvested year after year. In addition, this has objectively promoted the promotion of the rural cooperative model and accelerated the filling of Hongze Lake, and to some extent, bad things have become good things

And with the re-establishment of the hydrothermal balance, by the mid-50s, the area was basically in good weather. In fact, before the appearance of Hongze Lake, the Lianghuai Plain was originally a land of fish and rice with few floods and droughts, but now it can be regarded as the original appearance of hundreds of years ago

Compared with economic construction, the achievements of China's military industry in 1940 have attracted worldwide attention, in terms of aircraft, not only independently developed (although the chief designer is a foreigner) to produce the advanced fighter J-1 finalized production and began to equip a large number of troops, and the Hai Jian-1 developed and produced in cooperation with Germany was also finalized at the end of the year, and the carrier-based aircraft of the Stuka bomber modified Hai H-1 (this is the Chinese name, the Germans still call it Stuka. There was also a breakthrough after the Germans had some jishu exchanges with Japan.

However, compared with the development and production of HNA aircraft, the final finalization and mass production of the first teardrop-shaped submarine on the Shijie is undoubtedly of more far-reaching significance, and the German Navy's submarine commander Dönitz is full of praise for the drop-shaped submarine, which was named the "21" type (the Chinese name it the "Ming" class), and after receiving the transfer of an improved oxygen torpedo production Jishu from China, this submarine is even more powerful.

It can be used at 50 kilometers (submarines can use sonar to detect the position of enemy ships, and ultrasonic waves propagate in seawater, so they are not limited by the surface of the earth. Outside the enemy's large merchant fleet and even the fleet (this is generally required to be within 20 km, in order to increase the speed of the torpedo to more than 50 knots, because the speed of the warship is high, if the torpedo is only 30 knots, it is easy to avoid it. Launch a silent raid, and then immediately transfer

Due to the inconspicuous track of the oxygen torpedo, the enemy ship often had to find it at a very close distance and realized that it had been attacked by a submarine, and at this time at least 20 minutes had passed since the submarine launched the attack, and with the underwater speed of the "21" submarine exceeding 18 knots, it would have already driven 30 kilometers away, and the sea was vast, where was it so easy to find?

And if it was attacking the merchant fleet, it would be safer, because the distance at the time of the attack was forty or fifty kilometers, and because of the slow speed of the torpedoes and the long sailing time, when the enemy's convoy found the submarine, the submarine would have been driven 80 kilometers away, and in any case it would not be found again (to be continued......