When the Great Xia Dynasty was first founded, Di Jiazi personally established a department called the Wind Patrol Envoys to watch over the realm and keep officials from deceiving those above them, oppressing those below, and hiding the truth from the throne.
The Wind Patrol Envoys were an independent body, answerable only to the emperor in personnel and finances. Like the Martyrs' Shrines that honored soldiers who had died for their country, they were beyond the management and oversight of local officials. If local officials found problems with either body, they could only report them to the Imperial Court. They had no authority to intervene themselves.
Di Jiazi repeatedly emphasized during his lifetime that any official who interfered in the management of these two bodies would be deemed a rebel. Times changed afterward, as did all manner of policies, but this law remained in force and was faithfully enforced.
The Martyrs' Shrines were merely a body for honoring fallen heroes. They had few staff and little money or property. Apart from their prestige and lofty standing in Great Xia society, there was nothing remarkable about them. The Wind Patrol Envoys, however, traveled throughout the realm and could report on any matter, even directly to the emperor. Over the years, they had played a major role in cleaning up officialdom, investigating corrupt officials and tyrannical local gentry, and easing social tensions.
Someone had once said bluntly that without the Wind Patrol Envoys roaming the realm as the dynasty's eyes, ears, and claws, the Great Xia Dynasty would not have lasted a thousand years—it would have fallen in less than five hundred. More than one Great Xia emperor had also said that the Wind Patrol Envoys were among the pillars supporting the dynasty, no less important than the court or the army.