The Yellow River region is much less fertile than the Nile or Indus River regions, so people had to struggle for survival, leaving little time for other activities or time to think about what lay beyond this world.
在古老的先民時代，浩大強烈、變幻莫測的自然現象，使人類自覺渺小無依，洪水、地震、風暴、海嘯給人類帶來驚怖的災變；而日月星光、風潤雨澤、山林河川的無限資源，供給人類生存所需，又讓人產生感恩與依賴之情。