Some butterfly dragonflies designated as least concern by the IUCN Red List category that appears every summer in the big water lily pond of a restaurant near my house appeared again this year.
According to Wikipedia:Rhyothemis fuliginosa, also known as the butterfly dragonfly or the butterfly flutterer, is found throughout East Asia, being known to have been spotted in China, Japan, Taiwan, and the Korean Peninsula. It has been known to extend its range further south into Vietnam as well.