In a 2010 survey, the Taipei Golden Horse Film Festival asked 122 film professionals to vote for the 100 greatest Chinese-language films. Most of the voters were from Taiwan, but film professionals from Hong Kong and China and Chinese cinema experts from other countries participated as well. You can see the individual ballots on the Golden Horse website.
List-makers note: Since A Chinese Odyssey is 2 parts and usually occupy 77th & 78th in lists, I've still decided to place Part II at 101 just to make sure every other movie is visible at page one in grid view.
Source: ICheckMovies-list.
Also check out Hong Kong Film Awards' The Best 104 Chinese Motion Pictures.