"New and old value?"
"Yes, the essence of repair is to restore an object to its original state, so it consumes old value, while upgrading adds different aspects to an object, which requires new value. Additionally, to maintain its normal operation, Number 6 also needs to consume a certain amount of both new and old values daily."
Ma Lu thought for a moment, "I can understand the concept of new and old, but how exactly is it calculated? For example, if I make a slingshot with an old elastic band, is the slingshot considered new or old?"
"It's considered new," Old Wang answered crisply, "but if the process of making the slingshot only involves combining the elastic band with a branch, the new value provided is minuscule."
"So the new value is related not only to the item itself but also to the complexity of the production process?"
