BEIJING — Archaeologists say they have discovered some of the world’s oldest known primitive writing, dating back about 5,000 years, in eastern China, and some of the markings etched on broken axes resemble a modern Chinese character. The inscriptions on artifacts found at a relic site south of Shanghai are about 1,400 years older than the oldest written Chinese language. Chinese scholars are divided over whether the markings are words or something simpler, but they say the finding will shed light on the origins of Chinese language and culture. The oldest writing in the world is believed to be from...