"Aunt Kael! These devices consume spirit stones as their power source, correct?"
"Then could we substitute them with alternative energy sources?"
Kael replied with confusion, "Replace them with what, exactly?"
"Aunt Kael, you seem unfamiliar with the concept of 'neng.' Let me explain simply."
"Devices powered by spirit stones utilize spiritual energy."
"Those operated by qi use true qi energy."
"Similarly, tools driven by human effort rely on physical energy."
"Consider a simple bow and arrow - the most common device using physical energy."
"Without spiritual enhancements on bow or arrow, switching energy types maintains identical functionality - the arrow simply launches."
"The only variation would be whose arrow flies farther or strikes harder."
"Is this clear?"
Kael nodded, "
