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Zhou Jianhua had lunch with the factory leaders at the mining machinery repair plant and returned to the Changhong Coal Mine with Yan Donghai.

"Section Chief Yan, the matter is done, and the meal has been eaten, so I'll go back first." Zhou Jianhua stopped outside the office building and said goodbye to Yan Donghai:

"Although the design plan has come out, there will definitely be some production and process problems in the trial production process, and I will come over to see after the trial production preparation of the mining machine repair plant is completed and the formal trial production begins."

"Huh...... Xiao Zhou! This shearer dust prevention retrofit project can progress so quickly, thanks to you! By the time the product is trial-produced, you will have to work hard to make a few more trips. Yan Donghai replied with a smile:

"I know that you are a busy man, and time is very precious, so I won't keep you more, let's see you another day!"

"Hmmm! See you another day! Zhou Jianhua replied with a smile.

The two shook hands and waved goodbye.

Zhou Jianhua went to the carport to pick up his bicycle, walked out of the gate of Changhong Coal Mine, and rode east along the asphalt road towards Tonglin Coal Mine.

Just after riding a short distance, a truck overtook him and stopped in front, Liu Yang from the mining machinery repair factory poked his head out of the passenger seat of the truck: "Master Zhou, get in the car!" I'll take you back! ”

"Where are you going?" Zhou Jianhua stopped the bicycle and asked Liu Yang, who got out of the car.

"Go to the county to buy something......" Liu Yang replied as he opened the door of the cargo box and helped Zhou Jianhua lift the bicycle.

"Brother Liu is really busy, running back and forth every day." Zhou Jianhua said while sitting in the cab with Liu Yang.

"No way, the nature of the work is like this, tomorrow I have to rush to the city early in the morning to purchase some materials, including the steel to be used in your shearer renovation project." Liu Yang replied.

The "city" that Liu Yang said refers to "Xinchun City", which is the location of the Xinchun District Administration Office, which is more than 200 kilometers away from Jiancheng County. Although Jiancheng County is very close to the southern city of the provincial capital, it is administratively under the jurisdiction of Xinchun District.

"Why do you want to go to Xinchun City to purchase, isn't there a steel mill in Nandu?" Zhou Jianhua asked.

"Hehe, what's this...... There are regulations in the city that as long as the materials that Xinchun Iron and Steel Factory can provide, in principle, you can't go to other areas to buy them......" Liu Yang shook his head helplessly and replied:

"The price of steel at Xinchun Iron and Steel Plant is the same as that of Nandu Iron and Steel Plant, but the quality of steel is lower than that of Nandu Iron and Steel Plant. The supply of steel in Nandu Iron and Steel Plant is in short supply, but there is a large backlog of steel in Xinchun Iron and Steel Plant, and there is such a regulation in the city......"

"Heh......" Zhou Jianhua couldn't help but shake his head, this is what is often said about local protectionism.

At this time, reform and opening up was still just in its infancy, the planned economy was still the main force leading the market, the production and operation of state-owned enterprises still lacked autonomy, and the production and operation of enterprises were basically in accordance with the state's directive and guiding plans.

With the process of reform, in 1980, the central and local governments implemented the practice of "splitting the stove for food", and began to form a hierarchical and self-balancing fiscal relationship based on the division of revenue and expenditure by signing financial "contracting" agreements between the local governments and the central government, and thus local protectionism began to appear.

In order to ensure the development of the local economy, many regions will restrict the outflow of materials that are in short supply in their own regions, and for local unsalable materials, they will restrict similar materials from outside the region from entering the local market to ensure the continuous production of local enterprises. As a result, market barriers have been artificially formed in various regions, and this kind of local protectionism, which affects the free circulation of products, will be a great obstacle to the development of the market economy in the future.

"Master Zhou, when I was in the county two days ago, I was drinking and chatting with a few friends, and a friend from the county government said that the county TV station had a problem a few years ago, and it was repaired by a young man from Tonglin Commune, is this person you?" Liu Yang suddenly turned his head and asked.

"It's me. Why are you so well-informed? Zhou Jianhua replied with a smile.

"Huh...... Didn't I tell you that time, I walk around outside all the year round, and I am more familiar with people, especially in our county, and I have some friends in all aspects......" Liu Yang replied proudly:

"As soon as I heard them, I guessed it was probably you. I didn't expect you to even understand such complex and advanced radio equipment, it's amazing! ”

"Actually, it's nothing, it's just that now we see fewer wireless devices, and everyone thinks how complex and advanced this is, in fact, the principle is very simple." Zhou Jianhua explained:

"In a few years, you will slowly find that radio equipment is everywhere in our lives, not only radio and television stations, but also wireless walkie-talkies, wireless paging, mobile phone ......."

"Walkie-talkie? Wireless paging? Cell phone? What are these for? Liu Yang looked at Zhou Jianhua with wide eyes and asked in surprise.

"Uh...... It's just some equipment that uses radio for communication......" Zhou Jianhua suddenly felt that he had said too much, so he simply explained and quickly closed the topic.

"Do you know all of this?" Liu Yang asked again.

"Hmm. It's not a very difficult thing......" Zhou Jianhua replied simply.

"Where are these things you are talking about? Why haven't I heard of it? Liu Yang asked curiously, for a well-informed and well-informed person who has been walking around all the year round, even a junior high school boy knows something, he has never heard of it, what a lot of things to do......

"Now...... Not in the country, right...... At least not the civilian ones. Zhou Jianhua replied.

"Oh...... No wonder ......" Liu Yang nodded thoughtfully, and his heart was a little balanced.

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Zhou Jianhua returned to the machine repair class of Tonglin Commune in the afternoon, and went down the mine with the squad leader Fang Guisheng and electrician Zhuang Minghui to inspect the underground equipment.

When the group returned to the workshop, Zhou Jianhua asked Fang Guisheng again:

"Master Fang, how is the mining chain we repaired ten days ago? I'm not in the mine these days and I haven't had a chance to wait for it to stop and take a closer look......"

"Oh...... It's not bad, I checked it a year ago, and the corrosion and wear are not serious, so it should be no problem to use it for more than ten days like this. Fang Guisheng laughed with him and replied curtly:

"Huh...... It's still your level high, and if you don't accept it, you can't ......"

"Master Fang, don't say that, I just happen to know a little more than you in this matter, and I still have to learn more from you in other aspects." Zhou Jianhua patted Fang Guisheng's shoulder and said with relief:

"Years ago, the heat treatment furnace of Tonglin Machinery Repair Factory was also done, I said hello to them, and when you do heat treatment in the future, you will take them to do it, I believe that the chain you repair will be more durable than my repair."

"Hmmm! I got it. Fang Guisheng nodded embarrassedly and said.

For the rest of the afternoon, Zhou Jianhua helped Fang Guisheng make two large hooks to be used underground until he got off work. Zhou Jianhua said with a smile in his heart that he had been "not doing his job" for so many days, and this was finally done in Tonglin Coal Mine again.