How to write Si in calligraphy?

The last stroke of this stroke is really difficult. Beginners of calligraphy are embarrassed, and there is no special discussion among their predecessors. Let me try to say: when the strokes of the strokes come out at the end, they are most prone to problems, such as pointed upward, pointed arch and uneven edges. How to solve it? It is a basic problem to practice more according to the teacher's guidance. Personally, I solved it this way: hold the pen firmly, then suddenly get thinner, and then gradually exert myself. Finally, I will slow down and write down the final tips with my heart. If you are afraid that the nib will not write well at first, don't make it too long, just a little sharper, and then lengthen it when you are mature. Pay attention to the uniform stress on both sides, and the tip is flat.