Look carefully after enlarging the picture, the butterfly stays at the water's edge, with black body, bright blue front wings, serrated rear wings and orange or yellow spots.

Butterflies are butterflies. It belongs to Insecta, Lepidoptera, Hymenoptera, Papilionidae, Papilionidae and Papilionidae. It's called Papilio. China, Japan, Korea, northern Vietnam, India and Myanmar.

Adult butterflies like to visit flowers, while male butterflies like to absorb water, fly fast and have irregular routes, and often move in the open space on the edge of the forest.