In winter, it gets dark early, and it gets dark before five o'clock.

Huang Quan had dinner at Cao's house in Ma Yuan, and returned to the city at night.

In fact, during the day, Huang Quan had already found out that the police station was investigating him, so after returning to the city, Huang Quan was very careful, and deliberately let the rickshaw driver go around in the Xiaowenfang next to Rende Girls' School for most of the circle, and then got off at Baiyi Lane on the other side, and after making sure that no one was following him, he slowly walked back to the Rende Girls' School apartment.

At this time, Huang Quan is no longer the same Huang Quan as before.

At this time, Huang Quan was a spy under the name of the Special High School of the Japanese Ministry of Internal Affairs, and he had been trained in the secret service school in Tokyo for three years!

When I passed by the gatehouse, I said hello to Lao Li Tou as usual.

Lao Li Tou responded, no different from the past.

Rende Girls' School apartment is the same as a typical tube building pattern, after entering the door is the stairs, go up the stairs to the third floor, then turn right into the corridor, and walk to the first room on the south side is room 302, the opposite side of 302 is 301, before opening the door, Huang Quan habitually glanced at room 301 on the opposite side of the corridor.

The door to Room 301 was closed and there was nothing out of the ordinary.

I checked the envelope under the door and the hair on the doorknob, and everything was fine.

Huang Quan's nerves, which had always been tense, were completely relaxed, and he opened the door, picked up the envelope on the ground and prepared to enter the door.

Huang Quan, who had already relaxed, didn't notice that there was suddenly a small hole in the door of room 301 opposite, and a black blowpipe protruded silently from the small hole.

A moment later, a poisonous needle erupted from the blowpipe and hit the back of Huang Quan's neck accurately.

Huang Quan only felt a slight pain in the back of his neck, and thought it was a mosquito bite, and subconsciously reached out to shoot it, but found that his right hand could no longer be raised, and his left hand became weak, and the envelope held in the palm of his hand fell to the floor with a pop, and then, even his vision began to blur, at this time, Huang Quan realized that he had been plotted.

Huang Quan subconsciously wanted to pull out the gun, but his hands were completely out of control.

In the next moment, he fell headlong forward to the ground, and in a trance, he saw two vague figures come out of the opposite room 301, and then he didn't know anything.

"Anesthetic needle!" This was Huang Quan's last thought.

……

Let's talk about Zhong Yi later.

Gong Weiqian took the design drawings of Zhaobaoshan and Jinji Mountain fortresses to Zhong Yi to report to him, and Zhong Yi asked Zhang Yuanxi to come over and refer to them in detail.

When Zhang Yuanxi arrived, Gong Weiqian introduced: "Mayor, Brother Yuanxi, today at the construction site, I suddenly thought of a serious problem, the cannons of Zhaobaoshan and Jinjishan fortresses alone are not enough to prevent the Japanese Navy from entering the Yinjiang River, especially the Japanese army's small-tonnage gunboats, which are very agile in their actions, and it is difficult for the fortress guns to hit!" ”

"I've thought about that too." "But I didn't think of an effective response." ”

"That's true." Zhang Yuanxi said, "Fortress guns are very effective against large tonnage warships that are large and slow to turn, such as battleships or cruisers, it is difficult to avoid the cluster shelling of fortress guns, but for small gunboats under 500 tons, fortress guns are almost useless." ”

"That's why you have to use mines!" Gong Weiqian said, "Block the passage between the fortresses with mines!" ”

"Blockade the shipping lanes with mines?" Zhong Yi shook his head like a rattle and said, "This can't work!" ”

"Yes, absolutely not!" Zhang Yuanxi also shook his head again and again, "Mines don't have eyes, they don't avoid the ships of other countries, and they only bomb small Japanese ships, so once mines are laid, the communication channel between Yinjiang and the outside world will be completely cut off!" Our industrial park is also yellow! ”

In order for the industrial park in Yinjiang to operate, it must import raw materials from the outside world, and a considerable part of them must be imported from overseas by sea.

Gong Weiqian was obviously prepared for this.

At that moment, Gong Weiqian pointed to the map and said: "Mayor, and Brother Yuanxi, you see, we can completely change the materials that were originally landed in the urban area to go ashore at Zhenhai Wharf, and then take the railway to Jiangbei Station, and then transport them to the industrial park on the west bank of the Fenghua River by boat. ”

Zhong Yi said: "In this way, the safety of Yinjiang City is guaranteed, but what if Little Japan bombs Zhenhai Wharf?" What are we going to do? As soon as the dock is blown up, the material input channel will be cut off! ”

"The dock can be repaired if it blows up." Gong Weiqian insisted, "In order to ensure the safety of the urban area, I think this price is bearable!" This is at least better than letting the Japanese Navy's gunboats break into the Yinjiang River to show off their might, right? ”

At this time, Zhang Yuanxi suddenly said: "Wei Qian, can we design a more perfect plan, really let the mines in Jiangkou only bomb Japanese ships, but not the ships of other peaceful countries?" ”

"How is this possible?" Gong Weiqian said, "Mines don't have eyes, right?" ”

"Mines don't have eyes." Zhang Yuanxi smiled slightly, and said, "But we can help it put on its eyes." ”

"Equip the mines with eyes?" Gong Weiqian said blankly, "Brother Yuanxi, how is this possible?" Are you kidding? ”

"I'm just making an analogy, and I'm not really trying to put eyes on mines." Zhang Yuanxi said, "For example, when the ships of other countries enter the Yinjiang waterway, we can let the mines sink to the bottom of the river, and when the ships of small Japan enter the channel, we can let the mines rise, so that we can distinguish between friend and foe?" ”

When Zhong Yi and Gong Weiqian heard this, their eyes immediately lit up.

Gong Weiqian said excitedly: "This can be done completely, as long as the mine is weighted, it can sink to the bottom of the river!" ”

After a pause, he said: "We can pull an iron cable between the Zhaobaoshan Fortress and the Jinji Mountain Fortress, and then tie a certain number of counterweight mines to the iron cable, and let the mines sink to the bottom of the river together with the iron cables at ordinary times. ”

"No, there are still hidden dangers in this way, and the Japanese Navy only needs to concentrate naval artillery fire to blow up the iron cable, and it can destroy our blockade of the shipping lane." Zhong Yi shook his head and said, "Therefore, the iron cables and mines cannot be exposed to the water, and the winches on both sides of the strait cannot be exposed to the firing range of the naval guns on the river, but must be hidden." ”

Gong Weiqian said: "What does the mayor mean is to fix a wire horizontally at the bottom of the river first, and then fix a mine on the cable, and let the mine hide below the water line and not surface?" ”