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Group 1 - The core point of the article highlights the significant decline in the stock price of HeFu China, which hit the daily limit down, alongside a general downturn in stocks of Pingtan Development, Dongbai Group, and Baida Group [1] Group 2 - HeFu China's stock experienced a sharp drop, indicating potential volatility and investor concern [1] - Pingtan Development, Dongbai Group, and Baida Group also faced declines, suggesting a broader market trend affecting these companies [1]