This is a Hungarian banknote of 5000 forint. On the front is the Hungarian writer istvan Szechenyi, and on the back is the se chenyi family manor in Nagyzenk, Hungary.

There is no direct exchange rate between Hungarian forint and RMB. But in the paper money collection market, a brand-new one is probably 300 yuan RMB, and your paper money is in poor condition, so keep it.