That year, at his mother's memorial hall, Gu Yun swore publicly that he would never marry again in this life and would only have one son.,Gu Jiuyao clenched her fists tightly. Her grandfather had been so kind to them all these years, even if he found out something at the end, he probably didn't expect Gu Qing's world.,So, how can one bear the burden for a seriously ill elderly person。