Lin Jia smiled and replied, "That is a very profound question. Indeed, the baseline performance of a vehicle is determined at the time of manufacture. However, rolling off the production line does not mean a car is sold immediately. Even if a customer buys it and takes it home, it might not be used frequently. And when a car sits idle for a long time, the thing it fears most is prolonged disuse. That exact disuse is the primary cause of degraded performance or even damage.
Actually, there is something you might not fully realize. If you compare a person to a vehicle, what drives this vehicle is not ordinary fuel, but something called internal force. And this internal force originates from true qi. On Earth, true qi is an extremely scarce resource in very limited supply. But beyond its scarcity, true qi has an even more severe problem: it contains an exceptionally high level of impurities. We all know that if gasoline has too many impurities, it causes severe damage to a vehicle—far worse than simply sitting idle. And the two of you are 'vehicles' that have suffered severe damage right now. Can you understand what that means?"
Zhang Yan asked, "Are you saying we are those damaged cars?"
Chapter 453