The teacher led the door into the door, and inserted the grace of the willow in the meaning

The grace of planting willows comes from "unintentionally inserting willows into the shade", and there is also the meaning of "the predecessors inserting willows, and the descendants into the shade", which is used here as a metaphor for the teacher's cultivation grace and does not want to reciprocate.

The meaning of this sentence is: how can I forget the teacher's kindness to me (I don't want to reciprocate it).

The grace of planting willows comes from "unintentionally planting willows into the shade", which is used here as a metaphor for the teacher's cultivation grace.

Intentionally planting flowers does not bloom, and unintentionally planting willows and willows into the shade.

The meaning of the two sentences is related. That is to say, things in the world are often like this: if you are very well prepared and do something very carefully, the result is likely to be a failure, and even the cost is in vain; On the contrary, sometimes something that is inadvertently or not deliberately forced has achieved an unexpected effect.

This reveals the truth of the impermanence of life, if you want to gain a firm foothold in such a world, you must do "gain and loss with fate, and the heart does not increase or decrease".