Fortune:

CEO Tim Cook named her the first-ever vice president and managing director for Apple in what it calls Greater China—the mainland plus Hong Kong and Taiwan. Apple’s other sales regions don’t have lead execs; the company prides itself on its “functional” structure, with teams grouped by what they do, not location. But it’s time for Apple to think different in China.

There is probably no more important executive at Apple outside of the “Core Four”. China is and will continue to be Apple’s most challenging market.