The word 'Saint' in the name of the Three Saint Gates was given to them by others.
The three big factions were the Taixi Faction, the Xuanzhong Manor, and Yuxu Mountain. They had a long history on this land, and no other forces were their match.
The three forces lived in seclusion and only showed their faces in the Cultivation Realm Conference which was held every 30 years, but their strengths were greater than that of any other forces!
It was why people called them 'Saints'.
Feng Xi was only a first-generation disciple of the Taixi Faction. Although he was in the same generation as the Faction Master, he was an ordinary disciple.
However, this was enough for him to travel the world with honor. Besides, he had a supreme treasure on him. Even if the retired grand elders of the forces in Wuwei Daoist Alliance were here, they wouldn't feel strange listening to Feng Xi, let alone the Faction Masters and Palace Masters.