Chinese characters in a broad sense refer to characters from Oracle Bone Inscriptions, Dazhuan, Jinwen, Xiewen and Xiaozhuan to official script, cursive script, regular script (and derived running script), while Chinese characters in a narrow sense with block letters as the standard writing method are also widely used today. Chinese characters were invented and improved by China people in ancient times. At present, the exact history can be traced back to Oracle Bone Inscriptions of Zhang Wen and Jin Wen, about 65438 BC+0300 BC Shang Dynasty. Then it came to Xiao Zhuan in the Qin Dynasty, and it developed into Li Bian in the Han Dynasty, which became the standard of handwritten fonts used today in the Tang Dynasty-block letters.
Chinese characters have been used continuously for the longest time up to now, and they are also the only characters in various ghost writing systems in ancient times. Chinese characters have always been the main official language in China. Chinese characters have developed to a highly complete level in ancient times. They are not only used in China, but also used as the only international communication language in East Asia for a long time. Before the 20th century, they were the official written and standardized characters of Japan, Korean Peninsula, Vietnam, Ryukyu and other countries, and all East Asian countries created their own Chinese characters to some extent.