Primordial Western.
Spiritual Mountain, Great Leiyin Temple.
The Great Sun Tathagata, transformed by Jinwu Lao Shi, using the River Map, Luoshu, and the twelve-grade Merit Golden Lotus, formed the Gate of Buddha Realm. Every day, vast Buddhist chants emitted from it, hovering over the Great Leiyin Temple, guiding the Primordial Clans members to Spiritual Mountain to listen to the Buddhist teachings.
Over time, all beings in the Primordial Western unknowingly became imbued with Buddhist nature, proclaiming themselves disciples of the Buddhist Sect. Anyone who slandered Buddhism would inevitably face their verbal condemnation.
However, this was only limited to the Western Continent; other areas of Primordial had fewer followers.