When is the Huang Group in Oracle Bone Inscriptions written?

Huang Zuming is a brilliant afterglow of Oracle bone calligraphy, which is equivalent to the second half of the fourth period of the Five Dynasties and the whole Five Dynasties, when Wen Ding, Di Yi and Di Xin lived. In this period, fine print was widely used for lettering, which was the highest among fine print, but direct lettering was very delicate and unusual. During this period, another kind of Chinese characters appeared, which was written first and then engraved. As the representative, "The Annotation of Song Feng Lu Gu Pen (First, Di Xin)" profoundly and accurately conveyed the meaning of the pen, and its mellow and profound smell was not allowed by bronze inscriptions.