A rock carving of a "Jiaozi," which is believed to be the world's earliest paper currency, was discovered in southwest China's Chongqing Municipality, archaeologists said Friday.

Jiaozi was printed in the Northern Song Dynasty (960-1127) and is regarded by most experts as the world's first paper currency, according to Dazu cultural research center.

Deng Qibing, archaeologist with the center, said that the carving was found on a stone inscription at the Dazu Rock Carvings, a World Heritage site, in Chongqing. Beside the Jiaozi carving, more than 40 coins were looselycarved on the stone.

Carvings of ancient coins are often found at the site, but this is the first time for archaeologists to discover paper currency carvings.

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Rock carving of world's earliest banknote discovered in China (http://www.xinhuanet.com/english/2018-05/11/c_137172448.htm)