Actually, she didn't need to bathe because she was protected by Cultivation Power, and she was almost spotless every day, not even sweating a single drop; so with such a clean body, why would she need to bathe?
However, to adapt to modern urban life, she wanted to try the contemporary urban way of bathing.
Zhou Jiajia led Xiao Fang into the bathroom and explained in detail how to turn on the water tap, how to open the shower to release hot water, how to adjust the temperature of the hot water, what to use to wash her hair, what to use to wash her body, and what to use to dry the droplets on her skin, and so on.
Basically, she explained how to use everything in the bathroom to Xiao Fang.
As for these modern technological things, Xiao Fang was very interested. What she never expected was that she just needed to gently lift up for the hot water to flow; this was much more convenient than boiling water for a bath in the Cultivation World.