Group 1 - The pharmaceutical commercial sector increased by 1.63% compared to the previous trading day, with Renmin Tongtai leading the gains [1] - The Shanghai Composite Index closed at 3897.71, down 0.42%, while the Shenzhen Component Index closed at 13056.7, down 0.68% [1] - Key stocks in the pharmaceutical commercial sector showed significant gains, with Renmin Tongtai rising by 10.03% to a closing price of 13.49 [1] Group 2 - The main capital inflow in the pharmaceutical commercial sector was 561 million yuan, while retail investors experienced a net outflow of 454 million yuan [2] - The stock Renmin Tongtai had a net inflow of 179 million yuan from main capital, representing 30.72% of its trading volume [3] - Other notable stocks included Haiwang Biological with a net inflow of 160 million yuan and Kaikai Industrial with a net inflow of 101 million yuan from main capital [3]