From "Gouzi Encouraging Learning": "A horse can leap but cannot move ten steps; a horse can drive ten times, but the merit lies in perseverance; if you persevere, the rotten wood will not break; if you persevere, gold and stone can be carved." "Qiji: a fine horse." Horse: a horse that cannot run fast. Carving, engraving: carving. This means that a good horse can't reach ten steps with one jump; a bad horse can travel a long distance in ten days. This is the result of non-stop walking. When carving something, if you carve it with a knife for a few times, it will stop, and the rotten wood will continue to carve it; if you continue to carve it, you can carve gold and stone into objects. This sentence shows that only by perseverance, perseverance and perseverance can things be done successfully. The rope cut off the wood, and the water dripped through the stone. From the "Book of Han·Mei Cheng Biography": "Taishan slips through the stone, and the single pole of the rope breaks the stem. Water is not the drill of the stone, and the rope is not the saw of the wood. Gradual decay makes it happen." Tun: rope. This means that the water flowing from Mount Tai can penetrate rocks, and very thin ropes can break tree trunks. Water is not a diamond-headed drill, nor is a rope a saw for sawing wood, but little by little friction causes the stone to break through the wood. It tells people that if they persist and work hard, things will succeed.