I don't know how you did it. Actually, why is FLASH so small and easy to spread? Generally, FLASH uses vector graphics, and many elements are reused. In addition, its resolution is relatively small, generally 12 zhen per minute, so it saves more space. Relatively speaking, if all you do is bitmap, town by town, and the resolution is large, it will naturally. In addition, you can try some FLASH slimming software, but you seem to exaggerate. Your problem should be that the material is too big. You should slim down the material first and reuse the existing resources as much as possible, which should save a lot of space. . . . . .