上世纪看歌剧《白毛女》,那时笔者年纪还小,有个问题弄不懂。杨白劳出外躲债七天(有歌词为证:“漫天风雪一片白,躲债七天回家来”),却把二斤白面总带在身上。杨白劳唱道:“卖豆腐挣下了几个钱,集上称回了二斤面,怕叫东家看见了,揣在怀里四五 The opera in the last century, “White-Haired Girl,” when I was young, there is a problem do not understand. Yang Bailao go out to hide debt for seven days (lyrics as evidence: “a blizzard of white, to hide debt for seven days to come home”), but the total amount of pounds of white flour in his body. Yang white laborer said: "selling tofu earned a few money, said the set back to two pounds face, afraid to call the boss saw, hides in his arms four or five