Another newly invented weapon is the 'Rolling Mine', which is actually what later generations called the Mine. These mines, cast in pig iron, are the size of a sea bowl, and the belly is filled with explosives, with a thin opening on it and a fuse through it.

Before the battle, the enemy chose a key road that the enemy must pass through or a place that was easily accessible in front of his position, connected dozens of mines to the "fire trough" of the "steel wheel firing" device, dug a pit and buried them, and applied camouflage on the surface. When the enemy inadvertently steps on the runner, it can rub and ignite, and quickly ignite the gunpowder, so that it blooms everywhere, iron filings fly sideways, flames soar into the sky, and the killing area is quite large, which is very suitable for blocking the movement of large enemy troops. However, since the probability of successful ignition in the use of the rotary machine is less than 40%, it is necessary to continue to improve this mechanism.

There is also a tripping ground rolling mine. Use a large porcelain altar, fill it with explosives, fill the mouth of the altar with soil, leave a small eye and install a fuse to bury it in the ground, and then put a pile of gravel on the ground, and at the same time bury a steel wheel lighter, connect with the lead of the altar, install a tripwire on the ground, or use a long rope to pull it from a distance.

When the enemy's foot touches the tripline, the steel wheel automatically fires, detonating the mine, the gunpowder jar explodes, and the earth, gravel, and pottery shards burst out in all directions, with great killing power. Because this kind of ground rolling mine is relatively simple to make and has a greater chance of successful detonation, the Yunnan firearms battalion has begun to equip it.

With these new weapons, coupled with the original firearms such as thunderstorms, the strength of the Yunnan army has also risen. However, there is no war in Yunnan now, and although the results in the experiment are not bad, after all, it has not been tested by the war, and now it can only maintain the research of the current project, which needs to be verified in the future.

Yang Lequan's Chinese patent medicine workshop, the current business is very good. Since Li Yi took the lead in the trial production of traditional Chinese medicine pills, it has swept Yunnan and surrounding places with its advantages of moderate price, easy to carry and good efficacy.

For example, Yuquan Pill, Dispelling Heat Pill, Duliang Pill, Fengfeng Tongsheng Pill, Xiaochaihu Pill, Yuping Pill, Jiuwei Qianghuo Pill, Shensu Li Lung Pill, Shiqi Qingwen Pill, Yinqiao Jie Pill, Shangqing Pill, Niu Huang Anti-inflammatory Pill, Wuling Pill Duhuo Parasitic Pill, Dahuo Luo Pill, Sijunzi Pill, Xinxuedan, etc., have all gained considerable recognition and goodwill, and the market economy is very good.

Yang Lequan himself is skilled in medical treatment, and has accumulated quite a lot of proven and effective prescriptions, as well as some of the prescriptions that Xuanyuan Shu gave to Yunnan that year, especially the pills made by Li Yi's later prescriptions, which have been verified and have amazing medicinal effects, and have made the majority of people rush to buy them, and even people from other places have come to buy, this alone can obtain more than 300,000 yuan of net profits per month, which is more than twice as high as the profit of Ningzhou Guanyao, and can be called the pillar industry of Yunnan.

In order to alleviate the financial burden of the people and the pressure of seeking medical treatment, Li Yi asked the government's Chinese patent medicine shops to set the price of pills slightly lower and not to sell them at will. Moreover, as long as the poor families designated by the Yunnan government can get the medicine supplied by the Chinese patent medicine factory for free, but they are not allowed to buy large quantities and transfer them to others, so as to prevent anyone from profiting from it.

This is because the pills from the Chinese patent medicine shops in Yunnan can only be sold at a lower price to the people registered in Yunnan, and for merchants and other buyers who come to purchase from outside Yunnan, they must not only raise the price appropriately, but also levy certain tariffs on them.

Therefore, when outsiders buy the same pills, they need to pay more than double the purchase price of the locals to buy them, so there is a rent-seeking space in the middle, which is why Li Yi has to strictly restrict them, after all, this is also the need to protect intellectual property rights!

Over the past year and a half, the Yunnan Printing Company has printed a large number of marketable books, from the "Spring and Autumn Period", "Book of Songs", "Historical Records", "National Style", "Book of Han", "Five Hundred Tang Poems", "Book of Jin" and other tomes of historical books, to biographies of past dynasties and local chronicles, poetry and articles are everything, and even some rare books that have been scattered for a long time have also been collected and printed by us, so that literati from all over the world rush to Yunnan for only one purpose. It is to be able to obtain an ancient book that is not usually available, so as to pass on the culture.

Although Li Yi has reduced the price of this movable type printed book to more than half of the original price of ordinary books, due to the huge sales, he can still make a net profit of hundreds of thousands of yuan a year. It is still more than enough to use these revenues to cover education expenditures.

For this reason, Li Yi demanded that the government at all levels in Yunnan once again raise the salaries of government-run teachers at all levels and increase their salaries. In addition, funds have been invested to comprehensively repair and renovate the school buildings, desks, chairs, and teaching aids of all government-run schools, and to raise the standard of living allowance for children enrolled in school.

In addition, in some private schools in poor and backward areas, due to the shortage of funds, teachers' salaries are meager, the teaching facilities are backward, and the students' willingness to enroll is not high, the enrollment rate is as low as less than 30%, which makes Li Yi very worried.

After consultation with the public, the Yunnan government decided to establish four large-scale regional boarding schools, each with a capacity of more than 1,000 students, including almost all school-age students in the area, in a number of contiguous areas in such impoverished areas, including Xingyi County, which had just been incorporated into the territory of Yunnan.

The government has provided all the funds for teaching and living, built a large number of spacious and bright classrooms, school canteens, and dormitories, mobilized school-age children and teenagers in various poor areas to attend school in a centralized manner, and all study fees are free of charge, and they are also provided with sufficient living subsidies so that they can have no worries about food and clothing. As a result, in just a few months, the enrolment rate of children in these places has rapidly increased to more than 90 percent, which has greatly improved the education situation.

According to calculations and statistics, including the war reparations received from Dayining, last year's fiscal revenue has exceeded 8 million yuan, and although last year's four wars cost a huge amount, resulting in last year's financial expenditure amounting to as much as 6 million yuan, there is still a financial surplus of nearly 2 million yuan, which is enough for Yunnan to breathe a sigh of relief this year.

Thinking about the financial income of only more than 500,000 yuan the year before last, this kind of change can really be called earth-shaking, so that Li Yi could not have dreamed of it. Of course, nearly half of last year's more than 8 million yuan of financial revenue was contributed by Dayi Ningguo to Yunnan, and the actual industrial and fiscal and tax revenues totaled less than 5 million yuan, but this is already quite amazing.

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