"There is nothing in the heart that can stir up dust" was a famous quote from the Diamond Sutra by the Zen master Xuanzang of the Tang Dynasty. The meaning of this saying is that if we are not obsessed with anything in our hearts, we will not be troubled by the troubles of the external world. In other words, if we can maintain inner peace and emptiness, we can get rid of all kinds of troubles and troubles and achieve inner freedom and peace. This sentence was often used to remind people to maintain inner peace and cleanliness, not to be obsessed with the surface of things, but to pursue inner transcendence and freedom. It can also be used as a guiding principle for Buddhist practice to help people get rid of their obsession and troubles and achieve inner peace and freedom.