Group 1 - The ETF market showed mixed performance with the automotive parts ETF (562700) leading gains at 2.97% [1] - The Shen 100 ETF Yin Hua (159969) increased by 2.74%, while the automotive accessories ETF (562260) rose by 2.10% [1] - The 500 Growth ETF (159620) was the biggest loser, declining by 2.75%, followed by the big data ETF (515400) which fell by 1.41%, and the German ETF (159561) which decreased by 0.75% [1] Group 2 - The article suggests that investors should consider buying index ETFs to capitalize on market rebounds [1]