工程咨询服务板块1月28日跌1.64%，杰恩设计领跌，主力资金净流出3.71亿元

Market Overview - The engineering consulting services sector experienced a decline of 1.64% on January 28, with Jian Design leading the drop [1] - The Shanghai Composite Index closed at 4151.24, up 0.27%, while the Shenzhen Component Index closed at 14342.9, up 0.09% [1] Individual Stock Performance - China Ruilin (603257) saw a closing price of 67.06, with an increase of 4.83% and a trading volume of 53,900 shares, totaling 360 million yuan [1] - Taiji Industry (600667) closed at 10.26, up 4.16%, with a trading volume of 2.668 million shares, amounting to 2.767 billion yuan [1] - Jian Design (300668) closed at 25.45, down 7.69%, with a trading volume of 94,600 shares, totaling 248 million yuan [2] - Other notable declines included Class Map Chuan Zhi (300492) down 7.62% and Shenzhen Ruijie (300977) down 7.09% [2] Capital Flow Analysis - The engineering consulting services sector experienced a net outflow of 371 million yuan from institutional investors, while retail investors saw a net inflow of 358 million yuan [2] - The main capital inflow and outflow for selected stocks showed varied trends, with China Ruilin receiving a net inflow of 25.8 million yuan from institutional investors [3] - Matrix Co. (301365) had a net inflow of 1.31% from retail investors, while Huatu Shanding (300492) faced a significant net outflow of 38.86 million yuan from institutional investors [3]