In the Earth Plane, especially in Huaxia, it's impossible for any major trade to not attract attention.
The lithium battery industry is one that involves some subsidies, and the nation keeps a tight watch on it.
The most crucial point is, these things can explode. It's not just that the lithium element is too reactive; lithium batteries themselves have hidden dangers that cannot be ignored—it's not just the risk of four-star mobile phone batteries exploding while charging, but also the sheer panic when they come into contact with open flames.
Feng Jun believes that he could manage to get two thousand sets at most; that's the upper limit. A trade worth four hundred million Huaxia currency is also the upper limit of the alert line.