From Chan Yi's explanation, Chu Ning learned about the special aspects of the Buddhist Sect.
The Buddha of that era took the path of consolidating the power of faith.
The Mountain Sect did not only help the Buddha build three peaks to gather massive amounts of the power of faith, but these three peaks also served another purpose.
Past, present, future.
The three peaks represent the three forms of the Buddha.
The Buddha of that time attained enlightenment atop Moni Peak, which is also known as Past Peak.
After his enlightenment, the Buddha built the Da Ling Temple on Da Ling Mountain, where he widely propagated the Buddhist Law, and Da Ling Temple thus became the most coveted sacred site for the current faithful.
But in the eyes of those powerful ones within the Buddhist Sect, Moni Peak is the truly desired sacred site in their hearts.
Moni, Da Ling, Mile - the three mountains.
Moni represents the past, Da Ling represents the present, Mile represents the future.