Perceiving into Reasons of "Relative Stability" inside Society of the SONG Dynasty by Judging from System of Providing Relief of Disasters

Each unified imperial court was mostly direct or indirect to perish by the peasants' uprising in ancient China. One reason that the court of the SONG Dynasty lasted for more than 300 years and keeping relative stability inside the society was the court of the SONG Dynasty had established a sound disaster relief system and its promptly and efficiently measures for the relief.