“Master Chai” Why is Master Chai’s so obsessed with the young girl ?

“Master Chai” Why is Master Chai’s so obsessed with the young girl ? What does she represent for him? and how is the connected to his nostalgia for his homeland?

“Divine Debauchery” What is “divine” about Master Jifan’s “debauchery” and what does it mean for Grandpah , big uncle and the narrator.