He had no water buffalo to till the fields, so he pulled a big boar on a leash to the fields to help with the plowing. But the boar chafed angrily under the yoke. After a whole day they had not even finished the first patch.
商于子家貧，沒有水牛耕田，就牽了一頭大公豬，駕馭耕田，大豬不肯受套，搞了一整天也沒有犁完一畦地。