2. When practicing the word "ha", turn your hand over your shoulder, as if you can hear your heartbeat. Sometimes the sound of the word "ha" will vibrate with your heartbeat. Is it normal?

The fourth and fifth toes of the foot are very difficult when practicing calligraphy. You can click on all five toes at one point. Please tell me what you can do, or whether you can omit clicking this action.

Although there is defecation before practice, sometimes there will be defecation during practice. Can we stop practicing for convenience? Whether to continue practicing where you stopped or start from scratch after it is convenient;

5. Can I eat or take a shower after practice? Is there a time interval limit?

6. Can the "heel-sucking method" of the six-character rhyme be understood as follows: before preparing to pronounce words, the body's center of gravity is in the front foot, and slowly moves backwards with the pronunciation until the center of gravity falls on the heel.