There is a difference between the pen tips of Eternal Life 400 and Happiness 400. Because the pen tip of Yongsheng 400 is more delicate and soft, and it is smoother and more natural to write, which is very suitable for meticulous brushwork and complicated fonts, while the pen tip of Happiness 400 is relatively hard, more temperate to write, suitable for writing with clear fonts and concise and powerful lines, so Yongsheng 400 is different from Happiness 400.