wartime

On April 23, the Guinness Book of Records recognized a set of Chinese bamboo sticks that existed for more than 2,300 years, the world's oldest decimal calculator.

The silver sword from the Warring States period remained bright after more than 2,300 years buried in a deep grave.

In eastern China, Jiangxi Province, people have found an ancient sword that experts claim is the sword of the Warring States period (from 475 BC to 221 BC).