The contrast is caused by changing the pressure on the pen, not because of the form of the pen.Bodoni is one example of this, but also sans serif faces like Helvetica have this origin.

• 但中国同样也有硬笔书法，现代人使用的钢笔铅笔水性笔之类自不用说了，最古老的刻在龟甲和兽骨上的甲骨文其实也是一种硬笔。