Cha Shan is an area in the core region. Cha Shans are bright and out of all the mao fengs show the most amount of savory flavors. Pork fat is a common way to describe them.
Earlier picks will be softer, lighter and with more savory flavors. As the seasons go on the vegetal flavor will be become bolder and there will be a bit more bitterness. The savory flavors will still be there but they wont be as bold. The final pick of Cha Shan is thick and vegtal, notes of chards and spinach, while still having a sweet savory flavor.
Earlier picks will be softer, lighter and with more savory flavors. As the seasons go on the vegetal flavor will be become bolder and there will be a bit more bitterness. The savory flavors will still be there but they wont be as bold. The final pick of Cha Shan is thick and vegtal, notes of chards and spinach, while still having a sweet savory flavor.