My Dear Son-In-Law, Why Do You Work at Bureau 749?

After the male protagonist got divorced, he met the daughter of a wealthy family. The two drank and chatted, stayed in a hotel for one night, and registered their marriage the next day, becoming the son-in-law of a wealthy family. But he was not recognized by his parents-in-law, until one day, something strange happened in the woman's mansion. The man desperately saved the woman's family and exposed his identity as working in the 749 Bureau. At this time, the mother-in-law beamed: "My dear son-in-law, why do you work at 749?" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.