延安 Traditional form: 延安 Pinyin (reading): Yán'ān Definitions: Yan'an, prefecture-level city in Shaanxi, wartime stronghold of the communists from the mid-1930s until 1949 Characters: 延 - to defer, to delay, to postpone; to extend, to prolong; surname 安 - peaceful, tranquil, quiet Traditional characters: 延 - to defer, to delay, to postpone; to extend, to prolong; surname 安 - peaceful, tranquil, quiet