 Chen again served with distinction during this campaign, though the details are not noted in his biographies.For his service in either the Yan or Dai campaigns (the attribution varies in different chapters of the "Records of the Grand Historian"), Chen Xi was enfeoffed as Marquis of Yangxia (t s "Yángxià Hóu") and named a "ranking" marquis ( "lièhóu") rather than the usual grade.In 198, King Ao of Zhao was discovered to be plotting against the emperor.