five sets.

On December 1st, 1948, the People's Bank of China was established and issued the first set of RMB with 12 denominations and 62 editions, including 2 1 yuan vouchers, 4 5 yuan vouchers, 4 1 yuan vouchers, 7 2 yuan vouchers, 7 5 yuan vouchers, 1 1 yuan vouchers, 5 2 yuan vouchers, 6 5 vouchers, 6 1 vouchers and 5, vouchers.

The unified issuance of RMB was an important measure to welcome the national liberation. It eliminated all kinds of currencies issued by the Kuomintang government, ended decades of inflation under the Kuomintang rule and the history of China's foreign currency and gold and silver coins in the market for nearly a hundred years, promoted the overall victory of the people's liberation war, and played an important role in the economic recovery period in the early days of the founding of the People's Republic of China. The first set of RMB stopped circulating on May 15, 1955.

You can look at this webpage about RMB:/view/1673.htm. I hope it can help you.