In fact, the current situation of the Wu Dynasty is not as dangerous as Lu Qi envisioned, and the current drought in Shaanxi has indeed led to starvation, and the unfavorable relief of the imperial court has caused riots in many places in Shaanxi, and a large number of chaotic people have wandered in Shaanxi, Shanxi, Shandong and other places. But it was far from being as critical as Li Zicheng'www.biquge.info s army approaching the capital in the later period, and at this time there were still enough imperial troops in Shandong, Hebei and other places to suppress and deter the rebellious people. At the same time, officials in Shanxi, Shaanxi and other places also adopted the method of suppressing the rebels by means of appeasing the rebels and making them belong to the imperial court, which cost far less money than sending troops to suppress them. It was not until a few years later, after a larger famine broke out in Shaanxi, that the rebels who had surrendered repeatedly rebelled to start a real invasion.

After 1627, the Jin general Amin led his army to attack Korea, forcing Korea to sign the Pyongyang Treaty to form a brotherly alliance, but Korea almost never fulfilled the brotherhood covenant, and always regarded the Later Jin as a barbarian country. At present, although the Houjin is developing armaments, their main energy is temporarily focused on the DPRK, and although they have been confronting the Wu Dynasty army in front of the Ningyuan defensive line, they have not launched any large-scale offensives. The Wu Dynasty transported a large number of firearms to the Ningyuan defense line through the Shanhaiguan defense line, which suppressed the Houjin army to a certain extent. In this case, the entire Wu Dynasty did not attach great importance to the threat of the Later Jin Dynasty in general, and there were even calls for the recovery of Jinzhou and the removal of the Houjin barbarians from Liaodong.

Lu Qi knew this, but the old time and space was the era of the most important firearms in the entire Chinese history, and some firearms were even more advanced than the firearms used by the British army in the Opium War hundreds of years later. Then the advanced weapons and almost open tactics of the Senate can definitely make the Wu Dynasty court refreshing. Lu Qi was a member of the Ministry of Commerce and Trade before he was assigned to the Zongren Mansion, and he has always kept in mind the price list sold by the Senate's commercial and trade system, and what is the most valuable of these commodities is, of course, the first choice of arms, whether it is the rifle sold to the former Zhancheng Port or the rifle sold to Zheng Zhilong later, the price is five to six times the purchase price of the Senate Military Equipment Department, which is an absolute windfall profit. Moreover, because these rifles are fired with fire caps, there are a large number of follow-up orders after the rifles are sold. A fire cap is such an "advanced" thing, and even things that most people in the old world can't make are naturally even more insurmountable here, let alone refined propellants and projectiles. In addition, because of the good relationship with the Wu Dynasty, then the cannon is bound to be one of the arms that will be sold, the Wu Dynasty's cannon many veterans have been taught, the power is not very accurate, the gun body is full of air holes, and the fire is not blown up is already the ancestor burned high incense, not to mention that it can also be used to fight with the wild boar skins, so the smoothbore cannon known for its fine workmanship and accuracy will definitely become a popular product of the Wu Dynasty.

When Lu Qi started his divergent thinking about how to sell weapons to Zhu Youxiao after arriving in Beijing, another veteran was sitting in the back seat of a Rolls-Royce III. This veteran is none other than Liu Yeqiang, the head of the science and technology department of the Senate.

It is said that Liu Yeqiang's participation in this northbound detachment is very inappropriate for any reason, the person in charge of the design institute has always been famous in Dongfang Port by consulting and launching various "new technologies", and now he left the work at hand and went to Beijing, this decision surprised many veterans. To say that Liu Yeqiang has a lot of unfinished work at hand, such as electric motors and mechanical marine clocks, and they are all urgently needed products. Liu Yeqiang's answer to this matter is also very simple, now the machining level of Dongfang Port is too low, even the large gears needed in the large pendulum clock are not well processed, not to mention the precision navigation clock in those gears that are smaller than the nail cover, can not solve this problem, can not do the development of the navigation clock at all. Now the focus of the development of the science and technology department has shifted to the bell tower generator if the internal resistance will be relatively large if the silicon steel sheet is not used, causing unfavorable situations such as heating, but this kind of small generator that is not much bigger than two fingers does not need to consider these problems at all, and it will not cause trouble at all. These generators are capable of generating a steady stream of five volts of direct current, which provides a voltage output through the locally produced bakelite USB interface to charge walkie-talkies, digital cameras, and tablets.

In addition to these small generators, the Rolls-Royce's Stirling engine is also connected to a large generator capable of producing 220 volts of alternating current, which is used to generate electricity for shortwave radio stations to test communications with Vostochny on the road. Because of Liu Yeqiang's companions, the northbound detachment carried a shortwave radio station. At first, Du Yande was opposed to Liu Yeqiang's application to bring a two-watt radio, and the transmission distance of these two-watt radios is dozens of kilometers, which is a long way to Beijing, and thousands of kilometers to move, what is the use of these two-watt radios

However, Liu Yeqiang has always insisted on bringing it, the short-wave radio station is transmitted through the sky wave in the atmosphere, sent out from the machine and then reflected to the ground through the ionospheric reflection of the atmosphere, and the span also has a great impact according to the different frequencies used, and there is often an embarrassing situation that there is no communication for about 100 kilometers but can receive it at a distance of 300 kilometers. The shortwave radio is related to the antenna structure form gain, receiver sensitivity, selectivity, and anti-interference performance. During the period of resisting US aggression and aiding Korea, the density of electromagnetic waves in nature was not so large, and with the power of two watts of silicon and two watts of the machine, Wang Cheng's back could shout hundreds of kilometers. So in the end, through discussion, the Executive Committee still approved the request of the northbound detachment to equip a shortwave radio.

If a shortwave station wants to propagate over long distances, it is necessary to strengthen the antenna, or increase the length of the antenna to ensure omnidirectional transmission. However, it was impossible for the northbound detachment to go north with an antenna tower, so the task of solving the problem of transceiver antennas fell on the shoulders of the science and technology department. But it didn't take long for this problem to be solved, and the solution was rather crude.

Because it is impossible for the convoy to stay for a long time before reaching the Beijing Division, it is absolutely not advisable to disguise the antenna as a large tree as in Hue or Van Son Port Information Station. Due to the need to propagate radio, the height of this antenna is required to be at least 60 or 70 meters, and at the same time, multiple Yagi antennas are used for directional transmission and reception. It is absolutely impossible to poke such a tall antenna group straight up, if you really build an antenna tower sixty or seventy meters high, it will weigh more than ten tons, and the port of Vostochny does not have such a hard metal, let alone enough tonnage and space to carry it.

Through discussions, the technical department adopted a rather cerebral approach to solving this problem, and the northbound detachment also carried the only unpowered flying vehicle hot air balloon in the entire Senate.

This hot air balloon is made from canvas made directly from the textile mill, and the outside of the canvas is coated with pine resin and shellac to reduce the rate of air leakage of the canvas. Two or three people can be seated in a basket under a hot air balloon, and heated air is lifted into the air by burning fuels such as wood and coal in a combustion chamber. A 100-metre long rope is tied to the basket of the hot air balloon to secure it from being blown away. The antenna set is installed under the hot air balloon and connected to the radio station on the ground vehicle by a copper wire to transmit wireless signals.

Of course, the equipment of the hot air balloon is not only for sending and receiving wireless signals, but also to provide reconnaissance capabilities for the convoy when it gets lost, after all, it is much simpler to heat the hot air balloon to lift off than to climb the nearby mountains to explore the road. In addition, the sniper can also be carried in a hot air balloon to provide fire support in the air, you must know that there is nothing more terrifying for this time and space than something that can go to the sky and kill people, and many elders are still ridiculing that this hot air balloon may also become a weapon of "surrendering soldiers without a fight".

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