What's the difference between Japanese ronin and Japanese samurai? Why did they flood into China in large quantities?

Japanese samurai is a formal social class, or a profession. In ancient Japan, the younger brother followed China, and his social class also learned from China, which was divided into "scholar, agriculture, industry and commerce", but it was different. The "scholar" in Japan refers to the samurai, belonging to the highest level of society and being respected. Warriors follow the principle of "loyalty and bravery" and will always follow and protect a master. Of course, this master will give them a salary. To put it bluntly, it is a bodyguard job.

After losing their master, the Japanese samurai became a ronin by wandering around in poverty. Once the master is killed, for the sake of so-called loyalty, faithfulness and reputation, samurai usually don't find a new master, so no one will pay them, but they don't want to lower their status to do what "agriculture, industry and commerce" do, lose their financial resources and slowly become ronins, often doing some stealing things and creating chaos for society.

After the Meiji Restoration, a large number of ronins flowed into China. Japan has accelerated the pace of its invasion of China. Before, due to the internal war in Japan, a large number of ronin were created, doing nothing all day. Now, there is aggression, and they all run around, because they can burn, kill and plunder, do whatever they want, and even become officers, which is better than wandering the streets. In addition, Qingdao was occupied by Japan at that time. In order to consolidate its rule, Japan immigrated to Qingdao, including many ronins. Therefore, a large number of ronins poured into China.

Japanese ronin in modern society has a new meaning. We are used to taking the second exam as World War II, such as entrance examination and various qualification certificates. In Japan, people who take the second exam are called ronin, and they call World War II Erlang.