Counterfeit money has long been a serious problem in China and it appears to be getting even worse. The main reason is that, in mid-November, the Chinese government will introduce new 100 Yuan banknotes which will be much harder to forge so the counterfeiters are working overtime. The rising number of dodgy banknotes is affecting Korea as well. Six Korea-based banks say they've detected 140 cases of counterfeit 100 Chinese yuan notes so far this year and more than half of that total has been since June. An official said he expects more forged bills to enter Korea with the extra influx of Chinese tourists expected to come to Korea during a big national holiday next month.