The flagship iShares FTSE China 25 ( FXI ), tracking 25 blue chip stocks, popped 0.95% after tumbling 1.76% to a three-month low the day before. China's stock market rebounded Tuesday from a sharp sell-off in the prior session after the government announced a hefty increase in defense and domestic security spending to support economic growth. In an effort to control housing inflation and speculation, Chinese officials said Friday they will enforce a 20% capital-gains tax on profits from home sales.