On a Saturday in December 1935, at half past seven in the evening, the Yangtze River, the surface of Nanjing.

To the north of the Jiangxin route, in the waters of the Qing Dynasty, a periscope quietly stretched out of the water.

A few meters underwater, a small submarine of the Ming Navy carrying 12 female soldiers, silently and slowly reconnoitering the voyage.

In the cramped cabin with a faint red light, the captain's entire face was pressed to the periscope. His arms climbed the big handles on both sides of the periscope, the brim of his hat was pulled behind his head, and he slowly turned in circles, humming a little song in his mouth:

"Today...... Raw rice has become rice...... Is it hard to change...... Mm-hmm, let's see what's new on the Tartar side today......"

"See anything new?" The engineer leaned to the side and poked his head out and asked.

"There's nothing new in sight at this distance. Let's get a little closer. ”

The engineer hesitated:

"Your Excellency, this is close...... Still closer? ”

"Yes, yes."

The engineer reluctantly turned his head and ordered:

"Steady your speed and go five degrees further north."

"What are you kidding, ten degrees off."

"Captain," the engineer said, with a crying face, "can we afford to work so hard?" Other boats come out at most once a week, but you're out for the third time, and it's the weekend tonight, so you're pretty much going to get by......"

The captain turned his head to stare at her, glared and said:

"Passable? What does it mean to get by? Let me tell you, the capital of the Tartars is two thousand miles from the Yangtze River, and our capital is only two thousand meters from the Yangtze River. We need a war to get to Beijing, and it may only take one battle for the Tatars to get to Nanjing. In the three hundred years since Empress Changping recovered half of the south of the Yangtze River, the Tartars have been trying to cross this river all the time, but they have not succeeded once, because we have maintained a high degree of vigilance. Behind us is the city of Nanjing, we are 'passable', and the Tartars are coming. Do you want the tragedy of the 10-day Yangzhou and the three massacres in Jiading to be repeated? …… Hmph, I don't care about anyone else, anyway, my parents, grandparents, uncles and aunts, aunts and mothers-in-law all live in Nanjing...... Hey, what are you laughing at, work! ”

After venting very scably, she put her face back to the periscope.

"The moon is good today," muttered the captain dissatisfied, "it's late in the day, and it's still so bright." Otherwise, if we float up, we will definitely see more things. The field of view with a periscope is too low. …… It's better to do it...... Cover everything up...... Reagan ......"

"Don't float up," the sonar man looked up in horror, clutching his headphones, "I just heard a fast propeller moving in Bearing 255, it looks like a destroyer!" ”

"Uh-huh...... "Captain spun around and continued to mumble, "what are your ears for...... I saw it a long time ago. Write it down, visually, and at twelve o'clock it was found that a Tartar destroyer was moving horizontally at a distance of about 1,500 meters and at a speed of about ...... Verse 12. ”

"Wrote it down."

The captain continued:

"Hey, Xiuxiu, check its parameters for me...... The length is about 90 to 100 meters, the distance between the front and rear bridges is very wide, there are three chimneys in the middle, there is a front main gun, a rear main gun, and there is no protective turret, well, in short, it looks like an antique...... Hey, did you find it? ”

The communications officer quickly flipped through the "Atlas of Appearance Identification of Pseudo-Qing Ships" and nervously reported:

"This should be an old-fashioned Baylor-class destroyer, with a displacement of 1,145 tons, a maximum speed of 25 knots, a 75-mm gun in the front and rear, well, and 24 50-kilogram depth charges......"

"I see, the 'Baylor' class, the German cargo, seems to be older than the 'dreadnought'. After the Great War in 1918, the Germans paid compensation to the French, and Qinggou bought it from the French. The Tartar Navy just can't do it, it's still using this kind of old ship designed at the end of the last century," the captain continued to stick to the periscope, humming with satisfaction, "...... I heard that my brother has been sick for a long time...... We ...... Carrying the lady ......"

……

"Ding ————"

Before the singing fell, a crisp, long sound wave reverberated clearly in the cabin.

The sound is very good, much like the prompt sound after Thunderbolt has finished downloading.

Suddenly, everyone around the periscope changed color.

This is a sonic detector on a destroyer, also called an active sonar. The destroyer uses it to send sound waves into the water, and the sound waves will bounce back when they hit the submarine hull, and the destroyer can judge whether there is a submarine nearby according to the echo received, and the direction, distance, depth, and so on.

Then, sniffing like a hound, you can rush overhead the submarine and drop depth charges. As for how long this process will be, it will depend on whether the commanders of both sides are rookies or veterans.

……

"Ding ————"

Another bang.

The captain swallowed. Through the periscope, thick black smoke was already spewing out from the bow of the Qing Dynasty destroyer in the distance, and it began to search for it violently.

"It has been discovered by enemy ships," the captain quickly calculated, "this is no better than the sea, the river is narrow, the depth is less than ten meters, and there is no way to dive." As long as the enemy ships drop depth charges, we will have no life. ”

Run, or fight? Thinking of this, the captain gritted his teeth and ordered:

"Stay on course, the twin engines move forward at two-thirds speed, and the bow torpedo compartment is ready."

The submarine slowly accelerated towards the enemy destroyer.

"Captain," the communications officer was about to cry, "we have only 5 knots at the fastest under the water, and 25 knots in the Tartars, and the water is so shallow here!" Send ......"

I wanted to say, "That's not how you send death", but I stopped and swallowed.

"Shh......h Don't be noisy, I tell you, shallow has the benefits of shallowness. So their acoustic sonde gets a lot of underwater noise, and we can mix it in. And the closer you get, the less effective the detector becomes. Besides," the captain stared at the periscope, his eyes shining with a confident and evil light, "Captain Tartar is probably a straw bale, and he should have sailed in a zigzag by now, and he was still flat and straight, with his long flanks exposed, like a target...... If you encounter such a situation, it is a sin not to fight once...... The torpedo was set to a depth of one meter and a half, the speed was set to 40 knots, and two of them spread out in five degrees......"

Knowing that the captain was about to go berserk again, everyone was sweating.

The gunnery officer gave detailed instructions with his head down, and at the same time thought with resentment, following this captain to make meritorious service quickly, and it is estimated that it will not be slow to send him to death.

"The torpedo is set."

"Tube 1 ready."

"Tube 1 is ready."

"Pipe No. 2 ready."

"Pipe No. 2 is ready."

"Okay, hold me ...... Nirvana hum hum hum ...... 1,000 meters ......"

Suddenly, the sonar soldier covered his headphones and shouted:

"Depth charges!"

"Gah?!" The captain was stunned, and he could see clearly in the periscope that the enemy ship was obviously still a thousand meters away, where did the depth charges come from? Did it fall from the sky?

……

"Tom——!!"

Not everyone has the experience of falling from a height of several hundred meters into the icy water. And it's still wearing summer clothes.

Xiang Xiaoqiang only felt like a depth charge, dragged by gravity, falling rapidly into the icy abyss, and the little remaining air in his lungs seemed to be about to be crushed.

Although he was almost knocked out when he entered the water, he still used the little reason he had left, desperately held his breath, and at the same time quickly greeted Li Guanniao and the ancestors of "Fei Fei".

His feet touched the soft mud and sand, and Xiang Xiaoqiang quickly curled up his legs very talentedly, and kicked hard, and his body was like a wooden stopper, drilling towards the water.

I don't know how long later, just when he felt that his lungs were about to burst, his head came into contact with the cold air. Xiang Xiaoqiang took a breath, the cold air rushed into his lungs, and the blood in his whole body ran again.

Xiang Xiaoqiang swung his feet, kept afloat, wiped his head and face, and spit out a mouthful of yellow and turbid river water, and his first thought was:

"Luckily, it was fresh water, so it didn't throw me in the sea. The ...... of these two dogs"

He shuddered, looking around. The pitch-black water was dotted with moonlight, and it was so dark that nothing could be seen around it.

In this way, it is time for the Ming Dynasty.

"Damn, it's so cold, where did you throw me? Such a large water...... The River of Trouble? Songhua River? Nurgandus? ”

A cold wind blew, and Xiang Xiaoqiang fought again. Although he was constantly moving, he already felt that his limbs were about to freeze into ice.

"It's over...... I'm going to die......" he choked on a mouthful of water, thinking desperately, "I haven't married a lot of wives yet, so I'm going to freeze to death here...... Enough to ......"

Click, choked on another mouthful of water.

Just when Xiang Xiaoqiang was about to lose the roof, he didn't know if it was a hallucination, he seemed to see a black thing standing not far away, as if it was a thin stake.

He didn't have time to think about it, and used the last bit of strength in his body to swim towards the life-saving straw.

I swim! Finally...... It's not close.

I swim! I swim! Finally...... Hey, it's a little bit closer.

I swim! I swim! I'll swim again! Finally...... Damn, what's the matter, this stake will still move?

Under the strong desire to survive, Xiang Xiaoqiang used his strength to feed, and a vertical pounce hugged the stake that wanted to escape.

……

"Gah?!" The captain made a strange noise again.

"Captain, what's wrong?"

The captain rubbed his eyes, stuck them to the periscope again, and slowly, a pair of eyes widened.

"What do you see, Captain?"

"yes, yes, what do you see?"

The captain turned his head slowly, and looked around at his subordinates with a strange expression.

"Uh, how do you say that...... In the periscope...... There is one eye. ”