When I used to pass under the Palash trees, I felt like it was raining slowly and this process i was felt every day. One day i stayed and start to observing to tree then I saw that many cicada throwing the liquid from their back side in gap of some times. After some more observations, I came to know that when they were throwing the liquid, there was a loud noise. After some time I saw a female cicada coming slowly towards a male cicada. After some time I saw that a female cicada slowly came towards the male cicada and they started mating.