China can sell US bonds to buyers for slightly less than the US government. This would actually create more liquidity in the US bond market but effectively red

China can sell US bonds to buyers for slightly less than the US government. This would actually create more liquidity in the US bond market but effectively reduce the US government's ability to finance more debt. The US government would have to sell bonds even cheaper to finance more debt. Whether this would have a big effect would depend on a lot of other factors but it's a significant playing card in the Chinese hand.