这是一款能够防止在长时间书写时笔尖产生积墨的中性笔，同时也有笔芯缓冲的功能。通过书写时给笔尖和纸面产生压力，当笔尖离开纸面的时候，通过笔芯尾部的转动结构带动笔芯使笔芯以30°角度旋转，旋转能让笔尖出墨更均匀流畅。整笔提供了更为舒适的书写体验感受。

     This is a gel pen that can prevent ink accumulations on the pen tip when writing for a long time. The refill has a buffer function as well. The pressure is generated on the pen tip and the paper surface during the writint process. When the pen tip leaves the paper surface, the pen core is driven to rotate at an angle of 30° through the rotating structure of the end of the pen core. The rotation makes the pen tip more uniform and smooth. The whole pen provides a more comfortable writing experience.