sentences:  In 978, with Song's determination to unify Chinese lands in full order, Chen decided that he could not stay "de facto" independent, and offered the control of the circuit to Song's Emperor Taizong, ending Qingyuan Circuit as a "de facto" independent entity.The area was reorganized into the Fujian Circuit in 985, which was the first time the name "Fujian" was used for an administrative region.Fujian or Guangxi was the origin of the ethnic Chinese Tran who migrated to Vietnam along with a large number of other Chinese, during the Vietnamese Ly dynasty, where they served as officials.