There are many big models and applications of AI painting, but the most famous ones are Stable Diffusion and Midjourney, among which, especially Midjourney (hereinafter referred to as MJ), only 11 members, half of the 8 R\&D staff are not yet graduated undergraduates, never financed, established 3 years, 10 million users, annual profit of $100 million only by membership model ......