We're in Ancient Times, So Why Are There Still Unspoken Rules?

Su Feifei was a man, a workaholic who worked overtime tirelessly in hopes of getting promoted. The day before his promotion, he drank himself to death. He transmigrated into a baby’s body and learned that he was an illegitimate child. From the time his teeth came in, two old monsters used him to test medicines and poisons. Once, he nearly died, but fortune came from misfortune: Old Man Wang saved his life, and he gained sixty years’ worth of internal energy...

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.