Im pretty sure that this is the Oriental blue dasher, sitting in the sun.
They love the sun, as it heats up their muscles, and they are "perchers"—ie sit-and-wait predators that fly up from a perch to take prey and perch again to eat it.
The obelisk posture that you see here is a handstand-like position that some dragonflies assume to prevent overheating on sunny days. The abdomen is raised until its tip points at the sun, minimising the surface ...