Feng Chengshi's letter was very politely written, highly praising Chen Kai's construction of the defense line in eastern Guangdong and the great role of this defense line in the overall battle situation. In the end, by virtue of the huge scale and high frequency of the war, he euphemistically expressed that the production pressure of the Ordnance Bureau was too great, and the output was no longer enough, so it was hoped that as a side of strategic defense, Chen Kai and the Guangdong generals would be able to endure each other and save the loss of weapons, especially the consumption of gunpowder.

"Hmph, saving gunpowder, that is, the soldiers have to exchange their lives for it!"

For civil and military generals in feudal society, soldiers are just untouchables, just numbers that can be consumed, and even military generals are just more untouchable leaders than untouchables in the eyes of many civilian officials. What is easy to get a thousand armies, it is difficult to find, and at the end of the Ming Dynasty, it was more of a pretext for civilian officials to lose the battle and put the black pot on the heads of military generals.

However, officers and non-commissioned officers, whether they are feudal armies or modern armies, can enforce orders and prohibitions, and are not battalion bastards, the more experienced they are in combat, the stronger their combat effectiveness will be. Chen Kai never thought that the attrition of veterans was indifferent, but some people were obviously not like him.

"Feudal bureaucrats of dog days."

Even if he was in the feudal bureaucratic system, as a member of the feudal bureaucracy, Chen Kai couldn't help but scold. The Ordnance Bureau is the foundation he laid, and the foundation is so strong that it is already the best in South China. However, in the hands of Feng Chengshi, in a year's time, it was still like that, and the rapid development was reflected in the coinage, and now it is really unreasonable to ask him to save losses.

It is understandable that bureaucrats will put their own achievements first in any era. However, now that Feng Chengshi is sacrificing the soldiers on the Western Front, then Chen Kai feels that there is no need to expect anything from him.

Thinking of this, Chen Kai didn't feel that he needed to take care of anything, so he simply wrote directly to Zheng Chenggong. Some things are impossible to bypass Zheng Chenggong directly, not only because of the senses of Zheng Chenggong and the generals, but more importantly, because some things cannot bypass the Zheng Group behind them.

The letter was sent as soon as possible, and Chen Kai had already started the relevant preparations in advance, because he believed that Zheng Chenggong would definitely agree to his plan.

While preparing for the sudden situation, Chen Kai also got the results of Wang Jiang's investigation on sweet potatoes. In Wang Jiang's words, the yield of sweet potatoes is extremely high, and it is not limited to terrain, and it is not fertile land that can be cultivated, even on barren mountains and islands. The only thing is that it is best not to replace staple foods such as rice and noodles, otherwise it may not be good for the body.

"It's nothing more than a matter of protein and starch."

In later generations, sweet potatoes were produced in appalling quantities and became an extremely important crop worldwide. Even today, in the late Ming and early Qing dynasties, sweet potatoes are also high-yielding crops, and the speed of adaptation to the environment and the technical sophistication required to increase the yield to people are much lower than that of potatoes and corn. Although it cannot be compared with the yield of later generations, it is not inferior to rice.

"In the era of not having enough to eat, being able to eat enough is the first priority. However, food production should not be affected by this. ”

Popularization will undoubtedly take time, and it should not interfere with the normal agricultural production cycle. Wang Jiang's plan was to prepare first and wait until after the autumn harvest. In this regard, Chen Kai also agreed, after all, the issue of eating is very important, and officials who are in charge of the government must not ignore it.

Aside from the local Chaozhou, Chen Kai also wrote a special book, suggesting that Zheng Chenggong grow sweet potatoes on the islands of southern Fujian and places where it is inconvenient to grow other crops. However, he vaguely remembered that he seemed to have seen a joke about King Lu having a bad time when he was a prince in Kinmen, and he was called the king of sweet potatoes. Perhaps, the cultivation of this thing in southern Fujian is on a larger scale than he imagined, and it is also possible.

In summer, the heat is unbearable, and there are many things to prepare, which is very complicated, which is unavoidable. While Chen Kai was busy with general affairs, as time went by, at the end of June, Chen Kai received a report from the Ming army on the front line of Luohe, saying that the movements of the Qing army were becoming more and more frequent, and it seemed that they were about to make a move.

In the summer, under the scorching sun, the Qing army's horses had to run out to shield intelligence and suppress the Ming army's horses, if it was not a hostile party, Chen Kai even wanted to ask Geng Jimao for a high temperature subsidy for these 17th century model workers.

Chen Kai received the report, but he was still sitting high in the city, Rao is guarding the western front was a matter of great importance, and he must not be ignored, and he didn't seem to feel any anxiety about it at all. And on the side of the Qing army, since they have to jump out and toss on such a hot day, just because Geng Jimao can't swallow that breath, I'm afraid it's not that simple. If Chen Kai is not mistaken, this is obviously a chain reaction of Chen Jin's death......

"Chen Jin's minion is dead, and the green battalion soldiers in Fujian are also a group of wine bags and rice bags!"

Geng Jimao was very angry, and he was furious in the county government of Haifeng County. Naturally, there is no way to compare this place with the magnificent Jingnan Mansion in Guangzhou, and the heat alone, even if the ice is transported from all the way from the city of Guangzhou, it cannot be completely dissolved, and even what can be alleviated can only be described as minimal.

With such a temperature to fight outside, fire is naturally inevitable. In the past few days alone, there have been I don't know how many people have been killed. When he received the news of Chen Jin's assassination, the sympathy of the physical injury naturally aroused even greater anger, especially when all this was accompanied by the Qing court's strong urging.

"Lord Wang, the Hongyi cannon and cannon are already in place, hurry up to get cooler one day, transport them to the fortress, and teach those pirates a lesson!"

There is still a war on such a hot day, and the army has long been full of complaints. The two green battalion soldiers are better, after all, they are only green battalions, and they dare not their tails on the side of the Han army flag. However, the feudal soldiers came from Liaodong, and the nearest one was also in the north, and the scorching heat of Guangdong was recorded in historical materials that even the glue on the bow was melted, although there was an exaggeration, but in such weather to fight, it is estimated that more than half of them would have to faint on the battlefield before they could return to the camp.

Geng Jimao knew that it was powerful, but the anxiety on the side of the Qing court could also be seen. For this reason, he is naturally in a dilemma. Fortunately, or unfortunately, he soon didn't need to continue to struggle.