Oolong tea, made from more mature leaves, usually have less caffeine than green tea. On the flip side, mature leaves contain less theanine, a sweet, natural relaxant that makes a tea much less caffeinated than it actually is. That is the theory, anyway.
The highest point in Asia is Mt. Everest which is 8,850 meters above sea level. And Asia's lowest point is the Dead Sea which is 400 meters below sea level.
Parts of the Atacama Desert may actually exceed the dryness of most of Antarctica, though data from the latter insufficient to tell. Marianas Trench (Indonesia and Japan): lowest point on Earth at 35,840 feet (10,924 m) below sea level.