The poet used the technique of asking and answering questions to describe the anxiety of not finding a place. White clouds are nobler than hermits, and pine trees are used to describe hermits' character. The more I admire you when I didn't meet you when I was writing. The writing is popular and beautiful, complicated and concise, and the feelings are profound and unpretentious.
The hermit in the poem collects medicine for a living and helps the living. He is a real hermit. So Jia Dao has admiration for him. Only in this way, admiration and the satisfaction of failure highlight their disappointed feelings.