2. The original text is as follows:
The body is afraid of not moving, and the brain is afraid of not using it. The more you use your hands, the smarter your brain becomes. Three days fishing, two days drying nets, half-hearted, nothing. Practice one day, work one day, and not practice for ten days one day. Fist never leaves, mouth never leaves. Knives will rust if they are not sharpened, and people will fall behind if they don't learn. There is a road in the mountain of books, but there is no limit to learning the sea. The master leads the door and practices on his own. Practice makes perfect, and diligence is good at it.
3. Exercise hard and think hard. Use your hands and brains more. If you don't concentrate, you will accomplish nothing. Learning is like sailing against the current. If you don't work hard for a day, many previous efforts may be in vain. Singers should always sing, and martial arts practitioners should always practice. Even if you are proficient in a subject, if you don't practice every day, actively update your knowledge.