Being in the midst of blessings, one does not know the blessings. From a philosophical point of view, people living in Zhilan's house for a long time do not notice its fragrance. People inside the wall have been accustomed to the fragrance of flowers for a long time and do not realize its fragrance. It is the same as flowers blooming inside the wall and the fragrance outside the wall. They all mean that one is not aware of blessings despite being in blessings. Philosophy is the foundation of a person's life, the essence of the human soul, and the source of all human thoughts and spirits.