If you don’t read for three days, thorns will grow in your mouth; if you don’t play for three days, thorns will grow on your hands. Looking up makes you taller, drilling makes you stronger. It is better to have no book at all than to believe in the book. Work hard at reading and enjoy writing. If you want to know the affairs of the world, you must read the books of the ancients. It is better to read it ten times than to write it once. Read it a hundred times and the righteousness will come to you. Reading must be done over and over again in order to understand it. I have read thousands of volumes and written like a god. Approach it step by step, read it carefully and think carefully. The taste of external toughness will become boring after a long time; the taste of reading will become deeper and deeper as time goes by. The joy of reading is overwhelming, and the bright moon and frost are high in the sky.