Nationalist China (white counters), the weakest of the great powers, has a theoretical base of 40 BRPs - 20 in practice (allowing a minuscule 10 BRP per turn spending limit) as four out of her five Key Economic Areas (Shanghai, Peking, Canton, Nanking, but not Chiang Kai-Shek's capital at Chungking) are already occupied by Japan prior to the start of the US-Japanese War. This makes China dependent on US BRP grants to rebuild her forces, which given the Japanese occupation of the land supply route through Vietnam and Burma, means that small numbers of BRPs must be flown "over the Hump" (over the Himalayas from Ledo to Kunming - the Allied player normally needs to base some US air factors in India to achieve this - two air factors are needed to carry each BRP). Claire Chennault's Flying Tigers (orange counters) give China her own tiny (two factor) air force.