She has always been a child who is not familiar with the world, but she happened to meet him - Xiao Yuqing
He was used by his adoptive mother to take revenge. He hurt her severely, lied to her, and used her.
She despaired again and again, but she never gave up loving him because she always saw it in his eyes. Hate, pain, suffering, and deeply hidden love. It wasn't until she fell asleep that she didn't remember him. It was twenty years before he realized that he loved her.
He regrets, he feels guilty, and he loves her.
So he embarked on the road to win her back again, desperate.
When the catastrophe of heaven comes, he thinks that she gave up on him because of pain, so he is stupid enough to choose to sacrifice for heaven.
But she refused, she still loved him, so she rushed to save him. Fortunately, it's not too late. All the bonds in this world are because of deep love.