I want to immigrate to Japan. What are the requirements and precautions?

Japan is a non-immigrant country and will not issue "investment immigration" visas to countries such as Canada and Australia. So it is impossible to immigrate to Japan directly. At present, there are four channels for most Japanese people to stay in China: one is the descendants of old overseas Chinese. These old overseas Chinese have often lived in Japan for three or four generations, up to seven generations. Their ancestors migrated to Japan from China in the Qing Dynasty or the Republic of China before the Taisho era in Japan, so they naturally have the right of permanent residence in Japan. Second, people who have completed their studies in Japan. In modern China, especially after the reform and opening up, a large number of Japanese went to study in Japan at public expense and at their own expense. After graduation, many former international students choose to work in Japan. After a few years of stable work, you can gradually apply for permanent residence in Japan under the guarantee of your employer. Third, Japanese spouses. This may be the fastest way for China people to immigrate to Japan. If you marry a Japanese wife or a Japanese, you can apply for a "Japanese spouse" visa after going through the legal formalities for marriage. Fourth, stay in Japan after work. This is a little different from the second point, that is, you don't have to study in Japan first. If a Japanese university or company is willing to hire you for a certain position, you can apply for a "professor" or "international knowledge/humanities business" or "internal transfer" visa. Similarly, when you have worked in Japan for a certain number of years, you can apply for permanent residence in Japan.