农民王某欲将自己所有的两头黄牛出售。经与肉联厂约定，由肉联厂将牛宰杀后，按净得牛肉每斤４元５角的价格进行结算，除牛头、牛下水归肉联厂外，再由王某付宰杀费５０元。在宰杀的过程中，肉联厂屠宰工人在其中一头牛的下水中发现牛黄７０克。肉联厂将这些牛黄出售后，得款 Wang farmers want to sell all their two oxen. After the agreement with the meat factory, by the meat factory will slaughter the cattle, according to the net price of beef per catty 4 yuan 5 angle settlement, in addition to Ngau Tau, cattle into the water under the meat factory, and then by Wang Moufu slaughter fees 50 yuan. During the slaughter process, meat factory slaughtering workers found 70 grams of bezoar in the water of one of the cattle. Roulian Chang these bezoar sale, get money