With regard to the origin of Junshan, there is a mythical story.
The mythical story has been overlaid by literary accretions.
About the origin of the Water Splashing Festival there is this mythical story.
Their history textbooks, even those produced with EU subsidies, will tell a glorious though mythical story of centuries of national struggle culminating on this day.
The mythical story is told in the most famous epic in the whole of the Americas, the 'Popol Vuh'.