1) Currency of China 2) Medieval currency 
[currency] The Huizi ({zh|t=會子|s=会子|hp=huì zi}), issued in the year 1160, was the official banknote of the Chinese Southern Song dynasty. It has the highest amount of issuance among various banknote types during the Song dynasty. ...[philosopher] Flag of the Users Advice Bureau with the word article written on it. ...