China's equity markets have chosen to run with the authorities' latest vague promise of support for the sputtering economy, with stocks surging to their highest levels in nearly a month. The state-media readout on Monday from China's Politburo heralded a shift from "prudent" to "moderately loose" monetary policy as well as a desire to boost consumption. Warning signs, or at least more circumspection, seemed evident in China's foreign exchange market, which hardly budged, and bonds, which rallied while pushing yields to record lows - showing doubt over whether growth is really going to pick up.