In 636 , Murong Nuohebo petitioned to formally submit to Tang .
Emperor Taizong created him the dual titles of Prince of Heyuan and Wudiyebaledou Khan ( or Ledou Khan in short ) .
In 636 , Murong Nuohebo petitioned to formally submit to Tang , and Emperor Taizong created him the dual titles of Prince of Heyuan and Wudiyebaledou Khan ( or Ledou Khan in short ) .