Zhìzào hé chuánbō wěichāo shì yánzhòng de xíngshì fànzuì.
Manufacturing and distributing counterfeit money is a serious criminal offense.
Tips
memory
伪 means 'false/counterfeit' and 钞 means 'banknote/paper money.' 伪钞 = 'fake banknote.' The character 伪 contains 人 (person) beside 为 (to do/act), suggesting someone 'acting' or pretending.