三江平原SānjiāngpíngyuánMeanings1. Sanjiang or Three rivers plain in Heilongjiang, vast wetland watered by Heilongjiang 黑龙江 (Hēilóngjiāng) or Amur, Songhua 松花江 (Sōnghuājiāng), Ussuri 乌苏里江 (Wūsūlǐjiāng)Characters used三three江river平flat原former