Movable type printing (fine)/活字印刷术（精）

This book tells the story: During the Northern Song Dynasty, there was a boy named Bi Sheng who worked as an apprentice in a bookshop. He felt that there were many inconveniences in plate adjustment and printing, and wanted to invent a better printing method. So after hard work and unremitting exploration, he invented movable type printing.

本书讲述了：北宋时期，有一个叫毕昇的男孩，去书坊当学徒，觉得调版印刷有很多不便，想要发明一种更好的印刷方法。于是经过刻苦的努力，不懈的探索，他发明了活字印刷术。