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.
According to it, Central Asia includes Mongolia, Tibet, northeast Iran (Golestan, North Khorasan and Razavi provinces), central-east Russia south of the Taiga, large parts of China, Afghanistan, Pakistan, and the former Central Asian Soviet republics (the five Stans of the former Soviet Union).