Villain: Madam, My Master Told Me to Take Good Care of You

[Not an overpowered protagonist + A Record of a Mortal's Journey to Immortality + having children makes you stronger]

After transmigrating to an immortal-cultivation world, he became a lowly apprentice alchemist.

Fortunately, he awakened a rebellious System.

“Lin Li, it's the middle of the night. Why aren't you refining pills? What are you doing here? Have you no sense of propriety?”

“Master's wife, Master has been gone for over half a year this time. Before he left, he told me to take good care of you.”