Once the cold of winter has passed, the dragonfly nymphs crawl out of the dark mud and onto the banks, and slowly climb up onto tree trunks to undergo metamorphosis. After the adults take to the air in the sunshine, they may live from one to several months.
待大地回暖，幼蟲陸續上岸，慢慢爬到樹幹上羽化，從暗無天日的水底躍上光明的天空，一般成蟲可以活一到數個月不等。