Was the decline in combat effectiveness of the Qing Dynasty really due to Sinicization? Is abandoning marine development a tacit understanding with Japan?
Because of the late Qing Dynasty, in a series of wars, it was a series of defeats, so that the Chinese people suffered so much that many people were angry when they mentioned the Qing Dynasty! Calm down, everyone will start to look for the reason.

The Qing Dynasty's repeated defeats are looking for reasons
In the history of the Qing Dynasty, if you look at it from the standard of stability and prosperity, the Qianlong era is the key! Because before the Qianlong period, the Qing Dynasty's internal and external wars were all won! During the Kangxi period, Russia could be defeated in the area around the northeast, and during the Qianlong period, the Dzungar Empire could be destroyed in the Xinjiang region, which proved that it was still very capable of fighting, and it would not be able to do so later.
Before the Qianlong Emperor, the Qing Dynasty won many battles
But why did it end up fighting? Some people suspect that it is because of the Sinicization during the Qianlong period, on the grounds that both the Jin Dynasty and the Mongol Empire have destroyed or partially destroyed the Song Dynasty, but the Sinicized Jin Dynasty army that later ruled the Northern Song Dynasty was corrupt and degenerated to the point that they could not even ride a horse! Defeated by the Mongol Empire, the Yuan Dynasty established by the Mongols, shortly after the sinicization of the Song Dynasty, was driven out of China by the iron horse of Zhu Yuanzhang's army less than a hundred years later.
Therefore, some people suspect that the Qing Dynasty also followed the old path of the Jin Dynasty in the northeast and the Yuan Dynasty in Mongolia. I asked them, why is it that when they touch the Sinicization, their combat effectiveness is low? They also said that because the Han people have been a land-based people since ancient times, they worship the land, worship the house, worship food, love peace, eat well, eat well, drink well, and live well, and are not accustomed to war. There seems to be some truth to it! I observed the people around me, as long as I talk about the topic of houses, I can immediately attract a large group of people to discuss, go to the countryside where there are no people to build more houses, and wait for the next generation or the next life to appreciate! Looking at the data online, the field of gastronomy is often the number one on the list.
Land, houses, and food are the favorites of the Han chinese
What about the outside world? As soon as the propaganda message of Turkey and the West entered Syria, Syria became like this, the Crusades fought for nearly a hundred years, the death toll may be hundreds of thousands, in order to ensure that the name of the one God should be called Allah or Jehovah (Yahweh), to travel to Hong Kong, Taiwan, was shouted Chinese get out of Taiwan and the Indochinese out of Hong Kong.
I touched my head, a little confused, and finally decided to study how the Qing Dynasty was defeated, so that I could find the cause! The next result is the research results, and there is a landing! It was found that the Qing Dynasty had both civil and foreign wars, the civil wars were mainly fist bandits, the White Lotus Sect, the Heaven and Earth Society, the Taiping Heavenly Kingdom and the like, and the foreign wars were mainly the Eight-Nation Alliance attacking the Qing Dynasty.
Who are the boxers? It is some people who want money to fight boxing, boxing is to be physically strong, and when they encounter war, they can't eat losses first, and they have to have money to support! It seems to be a kind of idea that promotes the progress of social development, because asking for money promotes the division of labor and cooperation and development of society, otherwise where does money come from?
The White Lotus Sect, the Heaven and Earth Society, and the Taiping Heavenly Kingdom seem to attach more importance to the construction of systems and institutions and ideological work, and the people who ask to join believe that this is a bit of a struggle with the Qing Dynasty for the hearts and minds of the people, so the Qing Dynasty cannot meet the growing demand of the boxers for economic materials, and spiritually cannot win the support of the White Lotus Sect, the Heaven and Earth Society, and the Taiping Heavenly Kingdom, and no one loves! There will definitely be a decrease in combat effectiveness.
Why did the Qing Dynasty have no combat effectiveness against the Eight-Nation Alliance? This must first be studied from the history of the eight-nation alliance related countries, the vast majority of the eight relevant countries have a parliamentary system (equivalent to the People's Assembly), the Qing Dynasty did not, only listened to the bureaucratic side of the word, the result was closed to the country, the whole country did not know that foreign countries have steel-made ships and high-powered artillery, and finally it was difficult to return, the water has fallen very deeply, the loess has been piled up under the neck, and only then did it come to learn to smelt steel and do the bottom of the pyramid to lift the palanquin, rather than The Japanese-style innovative development, catching up.
The Qing Dynasty did not understand a lot of scientific knowledge
Because the top of the pyramid is the head, and the bottom end of the pyramid is the foot, the Qing Dynasty can't understand it, so the combat effectiveness is not strong. Later, the Qing Dynasty had no choice, and gave a lot of money to the boxers, who happily went to help the Qing Dynasty fight the foreigners, and they were still the best of the internal forces (the White Lotus Sect, the Heaven and Earth Society, and the Taiping Heavenly Kingdom) for the Qing Dynasty!
Who are the boxers? The vast majority of them are some Han Chinese culture, who have long opposed the Qing Dynasty's policy of being poor and foolish (the poorer the people are, the better they are to manage), demanding that the people be rich and open-minded, but in order to be stable, the Qing Dynasty adopted the method of daxing literary prison and closed door to the country, which led to backwardness and beating.
Therefore, the decline in combat effectiveness of the Qing Dynasty is due to the theory of Sinicization, which is untenable.
He also asked, why did the Qing Dynasty not develop a maritime military? It is because the Qing Dynasty received support from Japan when it destroyed the Ming Dynasty, and the history books record that when the Qing Dynasty was outside the Guanwai, there were materials on trade with Japan and Korea! So maybe there was some kind of agreement with Japan! That is, Japan used advanced firearms to help the Qing Dynasty fight against the Ming Dynasty, and the Qing Dynasty promised not to develop a maritime military in the future, otherwise it would offend Japan!
The Qing Dynasty only had a modern navy in its late period
Therefore, the Qing Dynasty later put those red-clad cannons there and forgot to improve, and also kept on not developing maritime combat strength, and reached a certain tacit agreement with Japan to ban the sea, which had little to do with the Sinicization of the Qing Dynasty. Let's discuss it.
Bibliography: History of the Ming Dynasty, History of the Qing Dynasty