What problems should be paid attention to in hard pen calligraphy copying

In fact, copying copybooks, don't care too much about whether the words written are like copybooks. The real purpose of copying copybooks is to learn how calligraphers write and see how calligraphers write, rather than copying the words of copybooks like photocopiers. The most important thing in calligraphy is to write a personal style with a strong artistic sense. A thousand people are not calligraphy.