Japan is a country that knows how to cheat. Especially in terms of patent rights. Let's put it this way, a lot of the time. We Chinese invented a tool and applied for an international patent. Japan slightly modified this thing and then said it was a new invention and innovation. thus circumventing international law. They don't have to spend the fees incurred by patents by using this thing. But if it applies for a patent and China wants to use their technology, it will cost expensive patent fees. Japan's national anthem used this method when it was first created. In ancient times, Japan required solemnity in the creation of its national anthem. Later, it discovered that the music used for sacrifices in ancient my country was very solemn and solemn. So they plagiarized ancient Chinese ritual music and modified it slightly to make it their national anthem. In ancient times, there was no concept of patents, and Chinese dynasties did not claim rights over them. The current legal term is called copyright. This matter is over. There are two reasons for Japan's success: ① It is good at circumventing international patent laws; ② China has lost the right to win the lawsuit because it has not pursued the case for a long time and has exceeded the statute of limitations. You can take a look at the picture below. Sacrifice is a very grand event. Japan learned from this.