Five years ago, his father’s company was set up by someone causing the company go bankrupt, Jiang Beichen was later humiliated by his relatives when he tried to ask for help in order to cure his father’s illness, he was later even ruthlessly dumped by his fiancée and eventually he was drowned into the sea by his enemies. Five years later, he returns back with great power and glory, not only does he avenge all the humiliation suffered by him and his father, but he also rises to be at the pinnacle of his country, looking down on the world.

Resource links:
https://demonragescans.com/manga/dragon-son-in-law-war-god/