The Song Dynasty The Song dynasty lasted over 300 years, from 960 to 1279. Their history is divided into two periods of Northern and Southern Song. The Song period was one of China's most peaceful and prosperous era. However the Song government was corrupt and weak. The Song Dynasty, or Sung Dynasty was a period in which the Chinese government was very weak. In the beginning General Chao K'uang-yin, also known as Sung T'ai Tsu, was forced to become emperor in order to unify China. Sung T'ai Tsu created a national army under his direct control. He, and only he had control of the military. Once he had passed away his less competent successors were unable to keep the military un