案例:李玉兰是一位71岁的孤身老人。3年前,她丈夫去世后,她的两个儿子共同协商约定,她的生活费用由他们承担,每月各给母亲150元钱和5公斤粮食。3个月前,李玉兰的大儿子因突发急病去世。此后,大儿媳每月只给李玉兰5公斤粮食,再也没给过赡养费。李玉兰老人由小儿子代理,向法院提起诉讼,要求老人的大儿媳继续支付赡养费。法院审理后,依法驳回了她的诉讼请求。 Case: Li Yulan is a 71-year-old single elderly. Three years ago, after her husband's death, her two sons agreed to agree that her living expenses would be borne by them and each month give her mother 150 yuan and 5 kg of food each month. Three months ago, Li Yulan's eldest son died of sudden illness. Since then, the big daughter-in-law only gives Li Yulan 5 kilograms of grain a month, never giving alimony. Li Yulan elderly by the youngest son, filed a lawsuit to the court, requiring the eldest daughter to continue to pay alimony. After hearing the court, she dismissed her claim according to law.