Bamboo shadow sweeps the street, dust does not go, and the moon hits the marsh without a trace. Who can fully explain the meaning of the upper part and the lower part?

Bamboo shadows can be swept back and forth, but the dust on the steps will not dissipate; Moonlight can shine through the clear bottom of the pool, but it won't leave a trace in the water. Later, this famous saying became a classic Zen saying in Buddhism: the heart of a Zen master is like the moon that rises and sets every night, shining on the ponds of thousands of families. When the bright moon is split into two unconsciously, it will be reflected in Chengtan, and Chengtan unconsciously reflects the same bright moon. The water reflects the pond, and the pond reflects the moon. This is the mentality of "the bamboo shadow sweeps the street motionless, and the moon crosses the bottom of the pool without a trace". The enlightenment of Zen Buddhism is like a big round mirror as crystal clear as the moon, which is treated equally, unscathed and unaffected. Do not lose clear induction, without any interference.