Core Viewpoint - The professional services sector experienced a rise of 0.86% on January 22, with Keri International leading the gains, while the Shanghai Composite Index closed at 4122.58, up 0.14% [1]. Group 1: Market Performance - The professional services sector saw significant individual stock movements, with Keri International closing at 30.81, up 7.09% on a trading volume of 150,100 shares and a transaction value of 453 million [1]. - Other notable performers included Shengke Nano, which rose 6.70% to 32.80, and Zhongfang Biao, which increased by 5.27% to 36.73 [1]. - The overall trading volume and transaction values for the sector indicated active market participation, with total transaction values reaching billions [1]. Group 2: Fund Flow Analysis - On the same day, the professional services sector experienced a net outflow of 40.74 million from institutional funds, while retail funds saw a net inflow of 82.54 million [2]. - The data indicates that retail investors were more active in the market, contrasting with the outflow from institutional investors [2]. - Specific stocks like Su Shi Shi Yan and Li He Ke Chuang showed varied fund flows, with Su Shi Shi Yan experiencing a net outflow of 41.82 million from retail investors [3].