工程咨询服务板块12月23日跌0.07%，旭杰科技领跌，主力资金净流入1.65亿元

Group 1 - The engineering consulting services sector experienced a slight decline of 0.07% on December 23, with Xujie Technology leading the drop [1] - The Shanghai Composite Index closed at 3919.98, reflecting a gain of 0.07%, while the Shenzhen Component Index closed at 13368.99, up by 0.27% [1] - A detailed table of individual stock performance within the engineering consulting services sector is provided [1] Group 2 - In terms of capital flow, the engineering consulting services sector saw a net inflow of 165 million yuan from main funds, while retail investors experienced a net outflow of 181 million yuan [2] - The sector also recorded a net inflow of 16.1 million yuan from speculative funds [2] - A detailed table of capital flow for individual stocks in the engineering consulting services sector is included [2]