Why are there so many dragonflies in Mid-Autumn Festival?

Mid-Autumn Festival is usually held in summer, which is the season when dragonflies breed and move. Dragonflies are more adapted to warm and humid environment, which is just the case in summer. Dragonflies also like to move around the water. In summer, there is more rain and more water, which provides more food and breeding places for dragonflies. During the Mid-Autumn Festival, dragonflies appeared in large numbers because of the suitable climate and abundant food resources.