科创50指数跌超2%，天合光能跌超9%领跌成分股

Group 1 - The core viewpoint of the article highlights a significant decline in the ChiNext 50 Index, which fell over 2% on January 20, indicating a bearish trend in the market [2] - Trina Solar, a key component of the index, experienced a notable drop of over 9%, leading the decline among constituent stocks [2]