If you can ride a normal bike, you can certainly ride this kind of variable speed mountain bike.

However, if you want to master the transmission function of this kind of variable speed mountain bike, you have to carefully read the instruction manual, and then slowly experience it in combination with the actual riding process.

Of course, Su Hongmei and Ye Xiaoqiao couldn't understand the bicycle manual in English, so Yang Weiping had to explain it while demonstrating it himself.

Hughsfield booked a ticket to fly to Shanghai at half past nine in the morning, and Yang Weiping didn't leave him to stay longer, after all, there were still too many business affairs to be handled by Husfeld.

With the friendship between the two of them, they can't afford to usher in the politeness of the send-off. Anyway, Hughsfield has his own car, and he doesn't even need Yang Weiping to arrange a car to see him off when he goes to the airport.

After eating breakfast, Hughsfield said hello to Yang Weiping, said goodbye and left, Yang Weiping just sent him to the door of the house, and waved goodbye.

Su Hongmei also rode her second-hand permanent 28 bicycle to school.

Yang Weiping asked her to ride a new car, but she refused to live or die, saying that the $6,980 bicycle was too expensive for her to ride.

In this regard, Ye Xiaoqiao, who was born in a big family, was not as particular as Su Hongmei, and he didn't care whether it would be eye-catching to ride this 79 Supreme on the streets of the capital, and he rushed around the alley on a mountain bike excitedly.

Yang Weiping originally wanted to ride a bicycle and go to the street for a walk, but as soon as this idea started, he was dispelled by the two distinguished guests who suddenly came.

In the study, Xu Qianqian took a brown wrapper Havana's top handmade cigar, put it on the end of his nose and sniffed it, then pointed to the delicate wooden cigar box on the coffee table, looked at Yang Weiping in disbelief and asked: "I heard people from the Ministry of Foreign Affairs talk about this kind of cigar, a box costs more than 20,000 US dollars, and we can't afford a box with a year's salary, is it true?"

"This is a fermentation process that goes through seven years. Handmade cigars, which go through 222 different stages from sowing to finishing, are generally reserved for European royalty and are rarely seen on the market. Money doesn't necessarily mean you can buy it. Yang Weiping held a cigar between his fingers and said as he took a puff.

With the taste of a veteran smoker, he certainly won't swallow a cigarette in his stomach. Instead, you have a mouth to taste the delicious taste of cigar smoke, and then slowly exhale it to form a variety of beautiful smoke patterns.

"I said Lao Xu, I specially asked you to accompany me to find Xiao Yang today. I didn't let you taste cigars!" The old general with a Chinese character face, who was about sixty years old and was sitting next to Xu Qianqian, shouted very depressedly: "Director Xiao Yang, you are not kind! You have helped the army and the air force get so many good equipment, why have you forgotten our navy?"

"Old Xiao, I don't like to hear what you say, what is it called unkind!" Xu Qianqian said with a smile: "Wei Ping was so tired that he fainted on the artillery position two days ago, I see." You'd better wait for the Navy!"

Don't look at what Xu Qianqian said, but Yang Weiping still heard that Xu Shuai was also worried about the current situation of the navy. Otherwise, he would definitely not accompany the naval commander Xiao Jinguan to his house.

Yang Weiping smiled confidently: "Commander Xiao, ten years of the army, a hundred years of the navy, to build a real blue water ocean-going navy." With China's existing industrial base, it has to be achieved step by step.

During this time, I have also been thinking about how to improve the strength of my navy. A war strike against Vietnam is imminent, the army and air force are in battle, and the navy is certainly not going to watch the excitement from the sidelines, because our Nansha Islands now have six large islands occupied by Vietnamese monkeys!

It is obviously unrealistic to increase the tonnage and overall strength of our Navy in such a short period of time. I thought about it and finally came up with a powerful weapon that would be most suitable for the current situation of our navy!"

"What weapon?" Xiao Jinguan asked with a glint in his eyes.

"Torpedo!" Yang Weiping mysteriously spat out two words.

"It's a torpedo...... Xiao Jinguan's old eyes flashed with a look of disappointment that could not be concealed.

"Commander Xiao, this is no ordinary torpedo. Yang Weiping said with a smile: "And a super torpedo with a speed of 200 knots!"

"How many knots are you talking about?" Xiao Jinguan asked in disbelief, "200 knots?"

Torpedoes have always been used as one of the main weapons for attacking surface ships and submarines, but due to the slow progress of research in electric propulsion technology in various countries for a long time, the speed of electrodynamic torpedoes has been hovering around 30 knots.

This is not enough to combat submarines and surface ships with a speed of more than 30 knots. Western countries, led by the United States, tend to develop thermodynamic torpedoes, the typical products of which are MK46, MK48. The Soviet Union, on the other hand, insisted on its own characteristics, namely the simultaneous use of heat and electricity, and increased the speed of the torpedo to an unprecedented 45 knots.

For a long period of time, it was generally believed that according to conventional design ideas, no matter how the alignment of the torpedo shell was optimized and how the specific power per unit of the engine was increased, the speed of the fish could never exceed 70 knots.

However, in the last life, after the collapse of the Soviet Union, Russia broke the routine of torpedo power and overall structural design, and successfully applied the principle of supercavitation to torpedoes, so that the speed of torpedoes reached an unprecedented speed of 200 knots, which was the "Storm" torpedo, creating a miracle of torpedo technology.

Huaxia's torpedo technology also came from the aid of the Soviet Union, and even after independent improvement, its speed did not reach 40 knots.

Now I suddenly heard that Yang Da Scientist said that there was a torpedo with a speed of 200 knots, and it was strange that Navy Commander Xiao Jinguan did not take it as a pool of the Arabian Nights.

"This is a kind of torpedo technique that was accidentally discovered by Tiangong Experiment during the study of supercavitation. Yang Weiping naturally attributed the source of the technique to the Swiss Tiangong experiment, put away his smile, and said: "Supercavitation is a physical phenomenon. When an object moves faster than 100 knots in water, a singular water vapor bubble forms in the rear, resulting in a 'supercavitation' fluid-mechanical effect.

A supercavitating torpedo is a supercavitating weapon with a cavitation generator mounted on the head of the torpedo. The cavitation generator generates a local bubble, which is then injected with gas by the snorkel to inflate it into a supercavitating torpedo. ”

"I don't understand whether this bubble is empty or not. Xiao Jin saw that Yang Weiping was not joking with him, and asked with hope in his old eyes: "Director Yang, are you sure we can really build this kind of torpedo with a speed of 200 knots?"

"Of course!" Yang Weiping nodded without hesitation and replied: "As long as our physicists and rocket experts understand the principle of the supercavitation phenomenon." With China's existing scientific and technological and industrial base, it is completely possible to achieve mass production of such supercavitating weapons!"

"Then hurry up and start building it!" Xiao Jin didn't want to think about it, so he got up and took Yang Weiping's hand and walked out, "The Admiralty has a special torpedo research institute. You go and give those old scientists a lesson in what kind of empty bubble they are going to do. ”

Anyway, we have almost rested, and we should seize the time to develop the Storm torpedo, which will certainly play an important role in controlling the sovereignty of the South China Sea in the future. Yang Weiping was not hypocritical, and followed Xiao Jinguan and Xu Qianqian directly to the Beijing Naval Equipment Research Institute.

Physical research. China in this era is not much worse than Western countries. Rocket technology is the first-class level in today's world.

Now that we have a CNC precision machine tool, it is not difficult to develop a storm torpedo at all.

Previous life. Huaxia and Russia jointly developed the Storm E supercavitating torpedo, at that time, Yang Weiping participated in the entire development process out of curiosity about this world's most advanced torpedo technology, and the rocket power part was designed by him himself.

Although it is not possible to make a Tempest E with a speed of 240 knots, it is possible to perfectly replicate the 200 knots Tempest A.

After giving a vivid lecture on the theory of supercavitation physics for the researchers of the Beijing Naval Equipment Research Institute, the door to the field of supercavitation physics was suddenly opened for these old experts and academicians who have been dealing with torpedoes all their lives.

Yang Weiping personally finished the power part of the Storm A torpedo. The warhead was left to the specialists of the Naval Armament Research Institute.

Taking advantage of this gap, Yang Weiping went to the Baicheng Weapons Experimental Center in the northeast.

Founded on August 26, 1954, Baicheng Ordnance Test Center is the earliest weapons test range built in China, formerly known as the Chinese People's Liberation Army Ordnance Test Range. Located in the depths of the Horqin grassland, Baicheng City, Ji Province.

The state weapons testing site is a functional unit prescribed by the state by administrative means. The test results provided are the most authoritative. The Baicheng Ordnance Testing Center is the earliest and largest conventional weapons testing range established in China, and is the authoritative organization for the state to conduct appraisal and finalization testing of conventional weapons. At present, it is directly under the leadership of the Commission of Science, Technology and Industry for National Defense.

As early as half a year ago, Yang Weiping gave the Baicheng Ordnance Test Center the task of developing a Type 80 general-purpose machine gun, a Type 85 sniper rifle, and a submachine gun.

In addition to inspecting the work of the Baicheng Weapons Test Center, I also wanted to know the extent to which the development of the Type 80 general-purpose machine gun, the Type 85 sniper rifle, and the submachine gun had progressed.

The two conventional weapons, 80 General Mechanic and 85 Sniper, were previously the Panshi Mercenary Base, and Zhang Shufang and Tu Zhiqiang were responsible for copying in advance according to the Soviet Union's PKM7.62MM general-purpose machine gun and SDV sniper rifle. The 85 micro punch was designed by Yang Weiping himself.

The Rock Mercenaries included many veterans from the East German People's Army, who were very proficient in Soviet-made weapons, and they also had a lot of suggestions for improvement.

The Type 80 general-purpose machine gun and Type 85 sniper rifle of the previous Huaxia began to be copied and improved after a batch of Soviet-made weapons were captured from Vietnam after the self-defense counterattack against Vietnam began. The development of 85 micropunch was not until 1983 and finalized in 1985.

Now, since Yang Weiping returned to Nairobi from the South China Sea and vowed to beat the Vietnamese monkeys, he has begun to prepare to help the Chinese army improve its conventional weapons, and of course it is impossible to wait for the Chinese army to capture it on the battlefield in Vietnam.

The Baicheng Ordnance Testing Center performs the functions of a national shooting range and is the last point of entry point for the troops to control conventional weapons on behalf of the state. The vast majority of China's existing conventional weapons and equipment are tested and finalized here and then installed in the troops.

The previous Bayi assault rifle was also finalized here after repeated destructive experiments and improvements.

At the shooting range, Yang Weiping took a Bayi assault rifle and emptied five magazines in a row, which felt quite good, and it was more perfect than the sample guns he made at the rock base at the beginning.

Now the Chinese army is reloading the Bayi assault rifle, which applies a universal tactical guide rail on the basis of the original design, moves the door and ruler to the back, and adds fluorescent dots to the door and the front sight. Not only did it improve the shortcomings of the aiming baseline being too short, but it also facilitated night shooting. Based on cost considerations, the tritium tube is not used, but the fluorescent dot is directly used.

The upper receiver cover further increases the rigidity and strength, improves the connection method, and the grip directly applies the AR-18 grip design, the grip angle and the barrel angle are exactly 120°, with excellent directivity and better man-machine efficacy.

In addition, the M was equipped with an optical sight on the universal tactical rail, an M203 grenade launcher and an M9 saber, an M16A2 flame suppressor at the muzzle, and a bayonet for the muffler was designed at the muzzle. It is already the most advanced assault rifle of this era, and it can definitely beat the AK47 equipped by Vietnamese monkeys in actual combat.

"A very good gun!" Yang Weiping smoothly put the Bayi assault rifle in his hand on the special workbench for shooting, and Zhang Yixiang, director of the Punch Test Center, said with a smile, obviously very satisfied.

"This is thanks to the design drawings provided by Director Yang!" Zhang Yixiang said happily: "This Bayi assault rifle is much stronger than the one we tried to produce before. Director Yang, do you want to try our Bayi sniper again, according to your requirements, we have equipped the Bayi sniper with a special high-precision sniper bullet!"

"Well, I'll try. Yang Weiping nodded and replied: "Director Zhang, the general tactical guide, you must remember to apply for an international patent, this is an independent intellectual property achievement belonging to our country, if the foreign army wants to imitate, it must be handed over to the patent royalty!"

"I've already applied! Zhang Yixiang nodded, and then waved his hand. One of the fighters standing next to him immediately presented a brand new sniper rifle with both hands.

This 81 sniper, which imitates the Soviet SDV sniper rifle, is basically the same as the SVD in all aspects such as principle, structure and tactical performance. Gas-conductive automatic mode, bolt rotary locking, 10-round magazine feed.

However, the 81 sniper is the same as the 81 sniper, both have reserved a general tactical rail, the butt has also been changed to a folding one for easy carrying, and the sniper scope does not adopt the design of the Soviet Union, but uses the Lesser Wood 3-9 times ART adjustable scope of the American M21 sniper rifle, and specially developed a special high-precision sniper bullet.

The entire gun is painted with matte paint and has a grayish-black color instead of the orange red of the original 85, reducing the chance of exposure in the jungle. (To be continued.) )