祖父家良田近一亩,种植葡萄谓之巨峰。食不尽,祖母乃售之于市。一日,一客买葡萄两市斤,值三元二毛,却予之祖母五十元面钞,祖母乃倾身之财,还之于四十六元八毛,风波由此而至……这50元面钞由祖母转至我手中,研究了半天,分不清是真是假,直至母亲回家后,找出家中闲置已久的验钞机 The grandfather’s Liang Tian is nearly one acre, planting the grape as the peak. Food is not enough. Grandmother is sold to the city. One day, a customer bought two grapes and two cities worth 3,000 yuan, but gave her grandmother fifty yuan for banknotes. Her grandmother was plunged into wealth and returned to forty-six yuan and eight hairs. The controversy came from this... The $50 bill was transferred from my grandmother to my hand. After studying it for a long time, I couldn’t tell whether it was true or false. After my mother came home, I found out the idle cash detector at home.