Why is Guizhou green tea so good?

"Golden fingers" frying tea

According to the test of academician Mr. Song Bao An of Chinese Academy of engineering, the average content of tea extract in Guizhou is more than 40%, 6 percentage points higher than the national standard, 4 percentage points higher than the West Lake Long Jing; the amino acid content is 3% - 5%, 1 percentage point higher than the national average.