Monastic life in its entirety is ruled by philosophical studies and performance of ceremonies. The four major orders of Tibetan Buddhism also have slightly varying monastic systems. But basically, study and spiritual trainings are deeply rooted in the curriculum of most monasteries. Within a large monastery there are two divisions of monastic teachings. One department is mainly devoted to the tantric studies and practices and performance of rituals and ceremonies.
This is typical of a monastery. This is a smaller monastery so not nearly the wealth of larger sized ones. The monks are sitting on mats that are directly sitting on the hardened ground. They have the mantras on small paper. These papers put together form a book, not bound but held between two pieces of wood. The more elaborate the wood, usually the older. Behind them along the wall are years of collections, gifts, thangkas given to the monastery. The adornments hanging, brightly colored silk pieces were once patchwork made of old silk. These can sometimes be found and some can be 200-400 yrs old, that isn't the norm. It appears that these are likely mass produced silk but even synthetic can be seen. As you can see the age of these men are older, the 30 somethings to 50 somethings are getting rare.