Summer has gone to autumn, and in the blink of an eye, it has entered August.

Because of the auctions held regularly by Yun's Auction House, Yunhua City has become one of the most famous cities in Zezhou, almost second only to the state capital Zezhou City, and people from all over the country flock to Zezhou and even the Dali Empire.

The increase in the foreign population, and the foreign population is mostly wealthy, so that the commerce and trade of Yunhua City have developed rapidly, within a month, only the construction of inns and taverns has been started as many as more than ten, but even if these inns and taverns are all completed and put into use, it can not satisfy the people who come to visit.

The people who opened inns, taverns and even Qinglou in Yunhua City before made a lot of money during this period, and their income in one month was more than the usual income in a year, so they attracted more people to raise funds to open inns and taverns in Yunhua City.

Although the foreign population of Yunhua City has increased dramatically, Yunhua City does not seem to be much crowded, after all, the foreign population did not exceed 5,000 at its peak, and now it has been maintained between 3,000 and 4,000, with a maximum of dozens of people per day, maybe when the next large-scale auction begins, the population of Yunhua City will usher in a new peak.

However, no matter how the foreign population increases, Yunhua City can accommodate it, and the current long-term population of Yunhua City is close to 30,000, which belongs to the small population in the county, but when Yunhua City was built, the ancestors of the Yun family had great ambitions in their hearts, and the specifications of Yunhua City were not much different from other larger county towns, Yunhua City could accommodate more than 50,000 people, and now the population of Yunhua City has not even reached 35,000, far from reaching the limit of Yunhua City.

In addition, Yunhua City is prosperous, and Yun's is also making a lot of money in Yunhua City real estate.

The Yun Clan's auction house is the main reason for attracting many foreign populations, and the dueling arena is also eye-catching, bringing a lot of income to the Yun clan every day, and the warriors who have no money have taken the stage, most of the time, the warriors who want to go to the dueling arena need to queue up, and the Yun clan is already considering building a second dueling arena, after all, the number of warriors in Yunhua City is very large, and some state capitals can't catch up.

The major forces of the Dali Empire saw that the dueling arena could make money, and even could tap talented warriors, so they built dueling arenas in their own spheres of influence, but the dueling arena was a very test of the number of warriors in the range, and there was no need to build a dueling arena in the county or even the county seat without many warriors, and there were not many warriors who would come to the stage to duel.

The duel arena in Xinping, the imperial capital, is definitely the duel arena with the strongest ability to absorb gold, even if there are three dueling arenas in Xinping, the income of each dueling arena is several times more than that of Yunhua City, after all, the population of Xinping is dozens of times that of Yunhua City, the number of warriors and magnates is more, and the average consumption level is also higher than that of Yunhua City.

The dueling arena in Xinping is so crazy, and the dueling arena in the state capital is not much worse, and each state capital basically only establishes a dueling arena, which ensures the income of the dueling field, and the income is higher than that of the Yunhua City duel, but to reach the level of the Xinping duel arena, it is just that the dueling arena in Zezhou City is a little embarrassing, the warriors in Zezhou are attracted by Yunhua City, and the number of warriors in Zezhou City is much less, but fortunately, there are many powerful people in Zezhou City, although the income is less than that of Yunhua City, but it is not much less.

As for the dueling arena in the county seat, some can guarantee a certain amount of income, and some of them don't have much, and the county town doesn't have to think about it, it's just a waste of effort.

It has been more than two months since the first large-scale auction held by Yun's Auction House, Yunyi has taught all kinds of machinery and materials to his disciples, although two months will not let them fully learn these things, but they also have a general understanding of these knowledge, and the rest need to be practiced by themselves, and only by practicing in person can they master these knowledge the fastest.

Then Yunyi transferred his disciples to the steel mill and the No. 1 base, and there were only three people who went to the steel mill, mainly to study steel, and to refine steel with various properties in the steel mill; Most of the rest of the people went to Base 1, mainly to study steam engines and steam engine-related equipment products, and a small number of people went to study firearms.

There is absolutely no shortage of people in the Mo family who study all kinds of weapons, and all kinds of war weapons such as cloud ladders, strong crossbows, giant crossbows, and catapults are all researched by the disciples of the Mo family, and some of the disciples of the Mo family recruited by Yunyi are researching weapons.

When Yun Yi took out the gunpowder and demonstrated the power of the gunpowder on the spot, the eight Mo disciples who studied weapons danced as if they had gone crazy because they had discovered a new world.

The eight Mo disciples asked Yun Yi what this was, and Yun Yi just smiled mysteriously, and finally the eight Mo disciples all became Yun Yi's disciples and helped Yun Yi study gunpowder and firearms.

Qingshan Iron and Steel Plant is definitely the most important industry of Yunyi now, because of the large amount of steel provided by the steel plant, the No. 1 base has produced qualified steam engines, and it has also allowed Yun's auction house to have a large number of weapons comparable to 100 forged steel for sale.

Weapons and medicinal materials are the two things that are the most attractive to martial artists, no one will easily take them out and sell them, Yun's take out a good weapon that has been able to mass-produce a good weapon, naturally it can attract a large number of martial artists, if the steel production reaches a certain level in the future, Yun's will even open a special weapon shop to sell all kinds of weapons.

The last time Yunyi went to the steel plant, the daily iron output of the steel plant was only more than 6,000 catties, it seems that this number is relatively small, in fact, whether it is the official steel plant of the Dali Empire or the steel plant of other first-class nobles, it is lower than this number, but in Yunyi's opinion, this number is still too small, not to mention that Yunyi went to steelmaking that time, and the first furnace of steel in the steel plant was born under Yunyi's gaze.

In the past few months, the explosives and steam-powered mining equipment produced by the No. 1 base have been put into use, and the output of iron and steel in the iron and steel plant has undergone earth-shaking changes, with the number of iron-making furnaces and steel-making furnaces in the iron and steel plant now, it can produce more than 8,000 catties of iron and more than 5,000 catties of steel per day on average.

If this number seems to outsiders to be very much, in Yunyi's opinion, it is still very small, and it is not enough to build a railway road between the mine and the steel plant, and a lot of steel is also needed on the side of Base One.

Therefore, the iron ore mining volume of Qingshan Iron Mine needs to continue to increase, and the scale of the steel plant also needs to be expanded.

Note 1: The actual production of iron is more, but most of the iron is used to make steel.