What does it mean to cultivate one's morality, to know mountains and rivers from generation to generation, and to keep one's heart lit?

Studying with morality, knowing mountains and rivers, passed down from generation to generation, the eternal heart light means: don't worry that no one will inherit these things in the future, and someone will inherit them in the future, and the light in our hearts will never go out.

1, plow the fields with virtue, and know the mountains and rivers as teachers. Even if the academic level is high and the teaching ability is strong, you must have good moral character to gain the recognition of your disciples.

This sentence comes from the Book of Rites. Le Zheng Ke, a student of Mencius, is an ancient educational paper in China, one of the monographs on ancient laws and regulations in China, and the earliest educational and teaching work in China and even the world.