What font was used in the Han Dynasty?

During the Spring and Autumn Period and the Warring States Period, many vassal states appeared on the land of China, and the characters of these vassal states were different, so there was a situation of polysemy, which brought difficulties to cultural exchanges between countries. After Qin Shihuang unified the six countries, he ordered the unified use of a script-Xiao Zhuan. This kind of writing is much simpler than the previous writing, but it is still a bit cumbersome, so an emergency folk style-official script has gradually emerged. During the Three Kingdoms period, Zhong You of Wei created a simpler and more beautiful script-regular script. From then on, Chinese characters established its square shape and began to have a shelf structure. Since then, people have created cursive script, running script and other fonts, and world-famous calligraphers such as Zhong, Wang, Yan, Liu, Su, Huang, Mi and Cai have also appeared. The development of Chinese characters has gradually entered a higher level.