The peak of a mountain is generally just a destination and the end of a trip.
For tiny peaceful Mister Tao, on the other hand it simply stands for a temporary stopover before he continues his research which may never come to an end.
A mountaintop generally represents the aim and end of a walk.
To tiny and peaceful Mister Tao, on the other hand, it simply represents a step in his endless search that might never come to an end.