My Son Is Frail and Sickly

[High martial arts, strategy, single female protagonist, setting up the world, the return of the king] In the seventh year of the Apocalypse, the relationship between the court and the martial arts deteriorated sharply, and the people were miserable. A young man in red clothes with a sword entered the capital alone with the best appearance in the world, in exchange for a peace treaty between the court and the world. No one knows what happened after that night What, it's just that the young man in red disappeared into the rivers and lakes. After that, the imperial court established Yan'an Pavilion, and the rivers and lakes established the Qingyan Tower to jointly govern the world. Ten years after the apocalypse, the rivers and lakes that were supposed to coexist peacefully were once again in trouble. A young man who lived in seclusion on a fairy island and was known as a wonderful doctor stepped into the rivers and lakes and solved unsolved cases! Set the course! Use endless layouts to gain peace and resolve conspiracies step by step!