How long did the Qin dynasty last?
Qin dynasty
The written language of the Qin was logographic, as that of the Zhou had been.[34] As one of his most influential achievements in life, prime minister Li Si standardized the writing system to be of uniform size and shape across the whole country. This would have a unifying effect on the Chinese culture for thousands of years. He is also credited with creating the "lesser-seal" (Chinese:小篆,; pinyin:xiǎozhuàn) style of calligraphy, which serves as a basis for modern Chinese and is still used in cards, posters, and advertising.[35]