"Old Friends in Rivers" - Rivers symbolize the torrent of the times, and old friends are those living individuals who still maintain warmth in the torrent. Through the intertwined fate of the four generations of Shen, Lin and Gu in the ancient town of "Huixi" in the south of the Yangtze River, it presents the folk history of China's "moving forward in warmth" from 1930 to 1970.