Take yin to replenish yang and break the void?

Tell me something?
Adagio Swift looked at Miaoyin with a smile, and gently scratched Miaoyin's nose, grinning and said, "I think it's better to do things than to talk about them.
"Stop it, I'm talking about business!"
Miaoyin slapped Adagio Swift's hand away in embarrassment, "Didn't you always ask me about dual cultivation before?"
Dual cultivation?
Adagio Swift was stunned, "You don't really know how to practice dual cultivation, do you?"
"I don't understand what dual cultivation...