Later, the first King of Tibet Nya-tri Tsed-po, particularly his son Mutri Tsed-po the second King of Tibet took the task of importing Yungdrung Bon teaching from the neighbouring country Zhang Zhung. According to sources, 108 Zhang Zhung scholars were entrusted to translate Yungdrung Bon teaching from Zhang Zhung langauge into Tibetan language. That is how Yungdrung Bon was imported into Tibet by these kings.
from 8th, century, Tibetans also imported Dharma from India. Since
then, Tibet had two major religious traditions; Youngdrung Bon and
Dharma who lived side by side. Yungdrung Bon has five sub-schools
and Buddhist with four sub-schools under their umbrella respectively.
Both the traditions emphasise on generating indiscriminate love and
compassion and have similar views on the path. However, there are
historical and geographical differences etc.