The first true writing we know of is Sumerian cuneiform- consisting mainly of wedge-shaped impressions on clay tablets - whichwas used more than 5000 years ago in Mesopotamia.

楔形文字是世界上已知最古老的文字。 这是一种刻在陶片上的文字，它的使用者是5000多年以前生活在美索不达米亚平原上的人们。

youdao

The earliest clay tablets come from the Sumerian culture of around 3, 000BC.

最早的泥板文书来源于公元前3000年苏美尔人的文化。

youdao

Built on a hill said to be inhabited continuously for 7, 000 years, it houses a small museum where Gandur, an avid collector of antiquities, studied a collection of ancient Sumerian tablets.

FORBES: Trouble Is My Business

He became infuriated that he could not bring me to accept what he believes to be pure fact, as supposedly revealed in ancient Sumerian tablets: that this mysterious planet is populated by beings who in the past came down to Earth, mingled with human beings and, by implanting us with their stellar DNA, kick-started us down the road to civilization.

FORBES: Maya Doomsday Blues: Should We Kiss Our Keisters Good-Bye?