Yang Ti was an ambitious ruler who immediately undertook many projects , including the building of the Grand Canal and the reconstruction of the Great Wall .
In 604 , Wen Ti was assassinated by his son Yang Guang , who became Yang Ti of Sui .
Yang Ti   was an ambitious Yang Ti who immediately undertook many projects , including the building of the Grand Canal and the reconstruction of the Great Wall .
In 604 , Wen Ti was assassinated by his son Yang Guang , who became Yang Ti of Sui .