牛无银推出“价钱照旧，鱼圆多两颗”的招数，罗娜也以牙还牙，加送三颗鱼圆，但她为了节省成本，要有财偷工减料，让鱼圆“缩水”。牛无银发觉，讥讽“好记”卖的是缩水鱼圆，罗娜反唇相讥，指“牛记”卖的鱼圆是“灌水”。NiuWuYincomesupwithanewpromotionalstrategytogiveaway2additionalfishballsattheusualprice.Nottobeoutdone,LuoNadecidestogive3fishballsalbeitmuchsmaller-sizedonescausingNiuWuYinandhertogetintoanotherquarrel.