What are the two most complete and oldest old sayings in China?

At present, the two most complete and oldest ancient sayings in China are Oracle Bone Inscriptions and Palau.

Oracle Bone Inscriptions is the earliest mature script in China, an important part of the formation and development of Chinese characters, and the earliest systematic script form discovered by China. Oracle Bone Inscriptions mainly refers to Oracle Bone Inscriptions in Yin Ruins, which is Oracle Bone Inscriptions carved on tortoise shells or animal bones by the royal family in the late Shang Dynasty (14 ~ 1 1 century).

Baluwen is a script popular in Central Asia in ancient times, and it is the most representative medieval Indian alphabet. China's Luwen in the Southern and Northern Dynasties was widely circulated in Central Asia. With the spread of Buddhism to the east, it also spread to China, Korea, Japan, Vietnam, Myanmar, Thailand and other places, which had a certain impact on the writing in these areas. Boruwen is called "Boruwen" in China.