[ChiNext Index Drops Over 2%, STAR 50 Index Drops Over 3%] Golden Finance reports that on July 21, major A-share indices declined, with the ChiNext Index dropping over 2% and the STAR 50 Index dropping over 3%. Chip stocks plunged, with constituent stocks such as Source Photonics Technology falling over 14%, and Shengyi Electronics and Biwin Storage both dropping over 9%.