Is the hard pen calligraphy thumb a complete sticker?

No, the correct posture is as follows:

The index finger and middle finger hold the lower end of the pen from three directions, about one inch away from the pen tip, and the upper part of the pen rests on the root of the index finger. The pen holder makes an angle of about 45 degrees with the paper.

The pen should be used in one go: the pen-starting, pen-running and pen-receiving of hard pen calligraphy are highly continuous actions that are completed in an instant. There is no hesitation in the writing process, and the pen should be used smoothly.