When nana moves into the guest room, she's allowed to stay and watch over her son. When nancheng tells his mom that he's been studying with nana, nan says that nana has the power to enter his "conscious-ness void" and even teach him how to do so. nan tells nan that he can put some pressure on nana and she'll use her "soul power" to resist. He uses the "heaven technique" , which involves using water as a shield to resist pressure, and then using the water to change the distribution of the pressure in different parts of the body. Eventually nanyu starts to feel tired, and nan warns him to be patient. He says that his "cultivation" is stuck in the bottle neck, but he can do it.