Wang Xianzhi and Eighteen Jars of Water

When Wang Xianzhi was seven or eight years old, he learned calligraphy from his father Wang Xizhi. He was very envious of his father's handwriting and wanted to catch up with his father one day. At first, he was very enthusiastic and energetic; but as time went by, he felt that it was a bit boring to deal with pen and ink every day. In addition, sitting there writing all day long made his back and arms hurt, which was really uncomfortable. . So he thought it would be great if there was a trick. One day, he asked his father this question. Wang Xizhi pointed to the 18 large water tanks in the yard and said solemnly to his son: "The secret of writing lies in these water tanks. You will know it after you finish writing in these 18 tanks."

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In this way, Wang Xianzhi continued to study and practice hard, and finally finished 18 tanks of water and became a famous calligrapher.

Question: What famous sayings can the last paragraph remind us of? Please write two sentences below.

Answer:

1. A drop of water can penetrate a stone, and everything will happen naturally.

2. The edge of a sword comes from sharpening, and the fragrance of plum blossoms comes from the bitter cold.

(Others that meet the requirements are acceptable)