Credit has exploded. Allocated by Maoist bosses for political purposes, it has become absurd. China is rolling as much steel as the next eight producers combined. It is churning more cement than the rest of the world. Fixed investment is up 53pc this year. Once you know that Hunan authorities have torn down two miles of modern flyway so that they can soak up stimulus by building it again, or that the newly-built city of Ordos is sitting empty in Inner Mongolia, you know what must come next.