"Six and a half calligraphy" refers to the calligraphy font created by Zheng Xie (Zheng Banqiao) in the Qing Dynasty, which is also called "Banqiao style" by the world. He mixed the official script style with regular script and created this type of font that is between regular script and official script, with more official script than regular script. Since official script is also called "eight points", Zheng Xie jokingly called the non-official script he created "six-and-a-half points script".