$NIO Inc(NIO.US) As I said, the automotive supply chain has no magic; just because you are Xiaomi doesn't mean you can drive prices down. It's simply about choosing tier-3 suppliers to cut costs. There is no such thing as being both cheap and good. This time, the N90's battery uses cells from Zhongchuang Xinghang, which recently had a major scandal—a tier-3 battery manufacturer. The world always gives you what you pay for. In an era where overall automotive profit margins are squeezed to around 3%, no one can work miracles.