CHINESE archaeologists have discovered the ruins of a city dating back an estimated 4,300 years in Dayi County in south-west China's Sichuan province.
The ancient city of Yandian, measuring 700 metres from north to south, 500 metres from east to west and covering an area of more than 300,000 square metres, is the seventh prehistoric city to be excavated in the Chengdu Plain area, according to Chen Jian, an official with the relics and archaeological team of Chengdu City, capital of Sichuan.