Since the boost from the Mountain Foundation comes from the future achievements of the people he helps, the more people he helps, the better. The amount of help he renders isn't the priority.
Only time will tell who is valuable or not, but in the meantime, he can count the number of people he has helped. He helps about 3 million people every day and has helped about 10 million people over the period of 20 years.
All of these helped Mountain Karma and Mountain Foundation level up, which in turn made him become more powerful. This power came both in terms of quantity and quality.
In terms of quantity, his raw power increased greatly. This can be seen at a glance when he remembers what his power looked like from the Mountain Sitting Dao.
When he recalls it, he can still remember it as clear as day. His recollection then helps him see how well he has grown.
-POWER.
1. Power (Body Refining) = 10 (Body) × 5 (Life Force) × 4 (Mountain Karma) = 200.
