It would appear the Chinese central bank currency squeeze is back as money-market rates are exploding higher once again. With the outpuring of liquidity heading into the new-year holiday, the post-celebration hangover was always likely unless PBOC just kept pumping but judging by the 500bps spike in overnight Yuan interbank rates to 9.3%, more than a few banks are desperate for some liquidity. We note that the last six times that Chinese banks have suffered liquidity constraints, US equities have tumbled…