From which book was Lu Xun's early words carved?

From "From Herb Garden to San Tan Yin Yue".

From Herb Garden to San Tan Yin Yue is an essay written by 1926 recalling Lu Xun's childhood fun. One example of engraving the word "Zao" is recorded as follows:

When Lu Xun was thirteen, his father was ill for a long time. On one occasion, when his father was seriously ill, Lu Xun went to pawn shops and pharmacies early in the morning, and when he came back, the teacher had already started classes. Seeing that he was late, the teacher said angrily, "Teenagers still sleep late and are late for class. Don't come next time you are late. "

Lu Xun nodded, made no excuses for himself, and quietly returned to his seat with his head down.

The next day, he came to school early, carved the word "early" on the upper right corner of the desk with a knife, and secretly vowed that he would get up early and never be late again.