Lu Sheng: I'm injured.
Lu Xiwu: It's okay, I have medicine.
Lu Sheng: Some people scolded me.
Lu Xiwu: Let me scold you back.
Lu Sheng: I want to buy a magic weapon, but I don't have enough spiritual stones.
Lu Xiwu: I'll help you negotiate the price.
…
Lu Xiwu: I need a wife.
Lu Sheng: No, you don't have a husband!
Another note: Everything about the plot is just a cloud. The author just wants them to fall in love and not take it too seriously.