If the family would have surrendered them to a shelter because maybe there can not provide for them anymore, I would understand their decision. Although surrendering your dog is hard sometimes people have no other choice and do it thinking about their pets well being.
But no, this family choose to do a cruel thing instead. They sold them both at a meat farm since they were no longer wanted by the family. This took place in South Korea where the meat trade is legal and the dogs where shipped to a meat farm where they were held in terrible conditions.