Exactly. Asset prices are not determined by central bank actions, there is a third component that pushes both asset prices and central bank policy - the global

Exactly. Asset prices are not determined by central bank actions, there is a third component that pushes both asset prices and central bank policy - the global supply/demand of savings vs investment opportunities. Which is driven mostly by demographics. China's massive working class, and the unprecedented rate at which they are getting wealthier, and their savings rate which is like >10x the average US citizen means there is a huge increase in the global supply of savings. Which bids up asset prices and pushes down yields, as savers compete with each other to buy up the extant profitable and safe opportunities. Central banks are the on the receiving end of this too: over-saving pushes down the natural rate of interest, which means policy rates must be lower to respond (unless you want to condemn some working Americans to unemployment).