Li Dagui's cover identity on the island for half a year was a carpenter, and this identity allowed him to have many opportunities to enter and exit the Dutch stronghold. As for the situation of the Dutch in the local area, especially the arrangements for defense, Li Dagui has long been clear.

"In the report handed over to Chief Lin just now, there is a port defense map drawn below, I wonder if you have ever seen it?" Li Dagui rubbed his hands and said: "I may be able to explain it in more detail by comparing it with the map." ”

Lin Nan immediately took out the report that Li Dagui handed in just now, and pulled out the map that Li Dagui said. The map was only a foot square, and was drawn in very fine handwriting on a thin piece of paper. Although the style of painting is very crude, Mu Shabai can see at a glance that the mapper must have been professionally trained, and the direction and scale of due north are marked on it, and the roads, buildings, woods, bridges, etc. on the map are marked with the standard symbols of the Haihan military map.

"The map is well drawn. Mu Shabai nodded and complimented. With Li Dagui carrying out his mission here alone, it is difficult to carry out a large amount of independent surveying and mapping work, and the maps used by the military staff are all drawn on the basis of satellite maps collected before the crossing, and the accuracy that can be achieved by this hand-made map is already very difficult.

"Master Xie's compliment!" Li Dagui was flattered, and quickly responded, and then began to explain the situation of this port to the two. He had already recovered from the shock he had seen Mu Shabai at the beginning, and since the big man had already stated that he wanted to take this island, how much credit could be given to him, I am afraid it would depend on how much he could earn at this time.

It has to be said that Li Dagui did not waste more than half a year on Natuna Island, and the intelligence information he collected was far more detailed than the written report delivered to the Ministry of Security. However, this is not that he deliberately concealed valuable information, but that his level of education is limited, and a lot of information cannot be fully reflected in the limited length of the report. And by using the method of dictation against the map to report like now, Li Dagui can pour out all the information he has.

Mu Xiabai and Lin Nan were not idle, listening to Li Dagui's narration, making notes at the same time, and from time to time they had to ask questions about the details of Li Dagui's words.

Li Dagui's oral report lasted nearly two hours before it ended, and at the end Lin Nan also gave him a reassurance: "You go back and stay well, this credit will be recorded for you first, and when the militia army conquers this island, they will transfer you back to Sanya to report on your work, and then you will be rewarded." ”

Li Dagui hurriedly responded: "I swear to serve the executive committee to the death!"

After sending Li Dagui away, Mu Xiabai spoke: "Commissioner Lin, your security department has done a good job, and the intelligence collected is very targeted, which is a great help to our military!"

"Chief Xie praises!" Although Lin Nan is a cadre in front of Li Dagui, he is a subordinate in front of Mu Xiabai. Although the two are not in the same system, under the rule of Haihan, the status of the traverser is undoubtedly the nobility in this social system, and the naturalized people are undoubtedly one level lower, even if they are naturalized cadres in special departments like Lin Nan. No one has expressed any objection to this, the people of this time and space are used to the existence of class differences, and one of the original reasons for the time-travelers to come to this time and space is not to enjoy the treatment of human beings?

Mu Xiabai calmly accepted Lin Nan's thanks and continued to ask: "Before you came, you said that there are two people from the Ministry of Security on the island, and when will there be an intelligence officer?"

Lin Nanying said: "The other person's disguised identity is a doctor, and tomorrow morning we will bring him to the ship under the pretext of treating the crew." ”

The next day, as Lin Nan promised, another intelligence officer operating as a doctor also came to the ship and gave a face-to-face report to Mushabai. Although this intelligence agent did not draw a map by hand, he continued to collect medicine for most of the year, and traveled around the entire island of Natuna, and he knew much more about the distribution of the inhabitants of the entire island than Li Dagui, which can be regarded as filling the gap in the information collected so far.

During the two days that the two merchant ships stayed in the port, they did not arouse the suspicion of the Dutch, and the representative of the Ministry of Commerce on board even sold some daily necessities from Sanya to the Dutch on the island, making a business of more than 200 taels of silver. This only convinced the Dutch that these two ships were indeed Ming merchant ships that were going to trade with Batavia.

After replenishing fresh water and food, the two ships left the port of Natuna on 7 January, circled the open sea, and after making sure that there were no other ships in the nearby sea, they turned northwest to join the fleet that had been cruising the open sea for the past two days.

After listening to the reports of Mu Shabai and Lin Nan, Wang Tom decided that the intelligence gathering work had achieved its goal, so he ordered the return voyage to begin. As for exploring the waters south of the Natuna Islands, that was not the main task of their trip.

In order to seize the time, Tom Wang once again decided to divide his troops into two routes, with him personally driving the "Lightning" sailing ship and carrying personnel from several major departments back to Sanya in advance to report to the Executive Committee the information he had gathered. The rest of the ships slowly returned at the speed they had come.

On the way back, the "Lightning" only anchored in Cam Ranh Bay for a day of rest, and then rushed all the way back to Sanya. However, Rao was so busy day and night that it had been two weeks since they returned to Sanya.

While the reconnaissance fleet was heading south, the track line in Changhua was finally completed at the beginning of the new year. The steam locomotive from Changhua Port arrived at Shilu Station in an hour and a half at an average speed of 25 kilometers per hour, within a kilometer of the two pit excavation sites that had already begun to break ground. The longest track on Hainan Island marks the beginning of the official implementation of the Shilu Iron Ore Mine, which will be transported by rail to the sea, where it will be turned into thousands of tons of steel at the Changhua smelter.

Qiao Zhiya, the director of the Changhua Shilu project and now the military and political chief of the Changhua Development Zone, has moved his office from near the county seat of Changhua to the hillside of Shilu. The office site of Shilu Mining Area used to be the residential area of Shizitong, and because the foundation here was ready-made in the early stage of site selection, Qiao Zhiya chose this place as the office and staff living area of the mining area for development and construction.

Most of the original hundreds of boat-shaped houses have been demolished and replaced with simple two-story wooden houses of Haihan standard. The Ministry of Construction has designed a special simple house for the development of the Shilu mining area more than a year ago, because it is located in the inland mountainous area, not as vulnerable to hurricanes from the sea as the seaside, so the simple house is mainly made of bamboo and wood, all the components are made in advance of the standard parts, after being transported to the construction site, only the foreman commands to quickly build like building blocks.

These simple houses can accommodate six to eight people each, toilets and bathrooms are shared, and each two-storey building can be built of any size, from one to a hundred, depending on local conditions, as long as the construction space can accommodate it. The Ministry of Construction has built 300 houses here before the whole line is opened to traffic, which can accommodate nearly 2,000 people, which can basically meet the needs of the initial stage of mine development.

Most of the thousands of workers involved in road construction in the early stage will stay in the metallurgical industrial zone of Changhua and enter the metallurgical industry to become steelmakers after simple training. Some of them will be assigned to settle along the railway line as maintenance and dispatchers for the track between Changhua and Shiroku. A small number of people will remain at the Shiroku mine to work as foremen and the like. The main labor force in the Shiroku mining area will be the thousands of prisoners in the forced labor camps, and given the production tasks assigned by the Ministry of Industry, it is feared that a considerable number of them will not have a chance to leave the mountain area alive.

In addition, the Ministry of Justice has also passed a new resolution, and in the future, all local prisoners on Hainan Island, except for some sensitive ******, will be served in Shilu Iron Mine, and even some existing prisoners in Tiandu Iron Mine will be relocated one after another, so as to facilitate the unified management of relevant departments.

Some of the technicians from the Ministry of Construction will be transferred to the northern part of Qiongbei to implement various infrastructure projects, while others will need to work overseas for a period of time, going to the southern coast of Annam to plan and direct the port development projects belonging to Haihan.

Qiao Zhiya now needs to worry not only whether the level of operation of the mine can meet the output required by the Ministry of Industry, but also the track line from Shilu Iron Mine to Changhua Metallurgical Industrial Zone is also a very troublesome long-term business.

Due to the length of the whole journey of more than 40 kilometers, the amount of work and the cost are too large, in order to save construction time and resources, this track line adopts a single-track construction design during construction, that is to say, the trains at both ends are actually speeding on the same railway. Of course, the problem of wrong train on the way is not difficult to solve, only need to build a double-track track on the way can be perfectly solved, from the perspective of construction technology is not too difficult, and the Ministry of Construction has indeed completed this task well. The same method has already been used on the rail line from Tiandu to Sanya, and the actual operation of Tongguò has also proved its feasibility.

However, it is difficult to implement this method here, mainly because it is difficult to coordinate the timing of dispatching trains. The train departing from the stations at both ends of the rail line has an hour and a half journey on the way, and there are only three double-track tracks for the wrong train, so how to make the train run to the right place at the right time for the wrong train is a very troublesome matter. If it is not handled properly, it is not just a matter of delay, it is likely to lead to a traffic accident. However, if the schedule of trains running in opposite directions is abandoned, it will greatly affect the operation efficiency of this rail line, and thus indirectly affect the steel production capacity of Changhua, which is unacceptable to the Ministry of Industry.

The rail line from Tiandu to Sanya is a perfect solution to this technical problem, but the method adopted there is difficult to replicate locally for the time being. In order to ensure the daily electricity consumption of Shengli Fort, wires have been erected between the industrial zone of Tiandu and Sanya, and by the way, wired telephones have been realized, and the train schedule between the two places can be easily communicated by guò wired telephone. The staff member who is responsible for the wrong train arrangement at the dispatch point on the way is instructed by the phone, and then manually pulls the switch to allow the incoming and outgoing trains to stagger the journey.

The staff in charge of this track line are all naturalized citizens by training, and since the railway has been in operation, there has not been a serious safety accident such as a collision of a train due to a scheduling error. The track line between Tiandu and Sanya has been partially completed, and when the double line is completed, there is no need to worry about the wrong train on the way.

This plan is also the technical solution prepared by the Ministry of Construction for the Changhua project, but when the time comes, there is no such condition between Changhua and Shilu, and there is no electric wire between the two places so far, and it is impossible to deploy wired telephones along the railway line to command. The energy department has thought of building a hydropower station in the inland mountainous area east of the Shilu iron mine, and using the water conditions at the source of the Changhua River to generate electricity. After all, in the time and space before the time travel, there was a large Shilu Reservoir in this area. However, the Ministry of Engineering rejected the proposal after a site visit.

It's not that the Ministry of Construction doesn't have the engineering capacity to implement this proposal, but that the amount of work is indeed a little larger, and it is necessary to build a concrete embankment with a length of more than 1,200 meters in the mountainous area, as well as supporting hydroelectric power facilities, which is about ten times more than the original construction of the Tianduhe power station, and the construction period will take at least eight to ten months, which is impossible to meet the existing conditions of Shiroku -- even if there is such a large number of laborers, the Ministry of Industry will definitely give priority to the mining of Shiroku iron ore.

If Shilu did not have a stable power generation capacity, it would certainly not be possible to erect power lines, and the method of using guò wired telephones to achieve train dispatch would not be possible. As soon as this link is disjointed, it directly leads to the problem of train scheduling that cannot be solved. At present, Qiao Zhiya can take the method of temporarily scheduling the number of trains and the wrong train arrangement on the way, and using high-power wireless walkie-talkies as a temporary means of communication. This is, of course, very inefficient, and it is also quite a waste of talent to have a limited number of traversers in such positions.

Qiao Zhiya also made a special report to the Executive Committee for this matter, asking for the establishment of a telephone line between the two places, and the Executive Committee had already approved it, but now it is quite a bit of a distant water that is difficult to quench the thirst, and this project will not be completed in a while.