延川 Traditional form: 延川 Pinyin (reading): Yánchuān Definitions: Yanchuan county in Yan'an 延安 ( Yán'ān), Shaanxi Characters: 延 - to defer, to delay, to postpone; to extend, to prolong; surname 川 - stream, river Traditional characters: 延 - to defer, to delay, to postpone; to extend, to prolong; surname 川 - stream, river