The moment you pass a little of your qi to Cheng Luan, a smooth and gentle process, the winds and songs grow louder. It's excited to see you again, a complete contrast to how Liu Chanshi seems about seeing you.
Cheng Luan sings its song, chirping about how well it's health is, how Liu Chanshi keeps it clean every day since the boy picked it from the sword wall.
The winds blow with affection, leaving a phantom touch against you, inside you.
Cheng Luan, unlike it's wielder, is talkative and more expressive about what it wants and likes. As a bonus--or maybe a flaw said wielder--it's talkative about Liu Chanshi's wants and likes as well.