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.
The lowest place on Earth: The deepest part of the Mariana Trench (or Marianas Trench) north of New Guinea and south of Guam lies 11000 meters, or 35,797 feet, or 6.8 miles below the surface of the ocean. So far, that would be the lowest place you could go on earth.