Group 1 - The engineering consulting services sector increased by 0.64% on January 23, with Zhaobiao Co. leading the gains [1] - The Shanghai Composite Index closed at 4136.16, up 0.33%, while the Shenzhen Component Index closed at 14439.66, up 0.79% [1] - Zhaobiao Co. saw a closing price of 19.24, with a rise of 5.48% and a trading volume of 163,200 shares, amounting to a transaction value of 309 million yuan [1] Group 2 - The engineering consulting services sector experienced a net outflow of 401 million yuan from institutional funds, while retail investors saw a net inflow of 446 million yuan [2] - The top gainers in the sector included Litu Chuan Zhi, which rose by 4.77% to a closing price of 77.99, and Suzhou Planning, which increased by 3.88% to 26.49 [1][2] - The sector's overall trading volume and transaction values indicate active market participation, with significant movements in individual stocks [1][2]