Group 1 - The motorcycle and other sectors experienced a decline of 1.89% on January 20, with Zhenghe Industrial leading the drop [1] - The Shanghai Composite Index closed at 4113.65, down 0.01%, while the Shenzhen Component Index closed at 14155.63, down 0.97% [1] - Major stocks in the motorcycle sector showed mixed performance, with Aima Technology up by 1.50% and Zhenghe Industrial down by 4.16% [1][2] Group 2 - The net outflow of main funds in the motorcycle and other sectors was 182 million yuan, while retail investors saw a net inflow of 126 million yuan [2] - The table of fund flows indicates that XD Longxin Tong had a main fund net inflow of 17.44 million yuan, while Shanghai Phoenix had a net inflow of 5.63 million yuan [3] - Retail investors showed a positive net inflow in several stocks, including New Day Co. with a net inflow of 463.27 million yuan [3]