How to write the long horizontal stroke at the beginning, the thin strokes in the middle and the closing stroke at the end?
The long horizontal stroke means starting the pen and then pausing the pen. The pausing means pressing the pen, and pressing it hard, that is, using more force.
The lines in the middle should be written with hesitation. Hexing means that when you write, you artificially create a force that hinders the movement of the pen edge, and at the same time overcome this force and write backwards.
When retracting the pen, stroke it to the right. When you reach the end of writing, you should retract the tip of the pen to the left. Such strokes are subtle, vigorous and powerful.
(For this general reference, you can refer to the 15 calligraphy training website https://www.seowhy15.com/p/161.html calligraphy training video, how to write the word "open")