"Little Apple," Li Jun, and "Little Fatty Girl," Liu Shiling, are both "users" and "developers" within Xiang Kun's "Super Sensory Item System."
Both established an early special connection with his "Super-connected Objects" or "Emotion Infused Objects," and according to their distinct cognition, they built their unique cognitive systems. They successfully found ways to apply Xiang Kun's abilities through various Super Sensory Items.
However, fundamentally, their cognitive systems, their ways of connecting with Super Sensory Items, and their methods of accessing Xiang Kun's abilities are all very different.
This is related to their differing personalities, environments, ages, and subjective perceptions.