Core Points - Beijing's subway construction plan for this year includes the initial operation readiness of Line 17 and two segments of Line 6, as well as the expansion of Line 13 [1] - The recent progress report indicates that Line 17, Line 6 south extension, and Line 18 have entered a three-month trial operation phase, which is essential for testing and system calibration [2] - Line 17 will connect key areas such as Future Science City, Wangjing, CBD, and Yizhuang, with a travel time of 66 minutes from Jiahu Lake to Future Science City North Station [4] Group 1 - Line 17 spans 49.7 kilometers with 21 stations, including 11 transfer stations, and the section planned for this year is approximately 7.2 kilometers long [2][4] - The south extension of Line 6 will add 2.1 kilometers with one new station, Dongxiaoying South Station, and has the potential for further extension [5][7] - Line 18 is part of the previously split Line 13, connecting key functional areas and enhancing transportation convenience for residents [8][10] Group 2 - The trial operation phase involves comprehensive testing of vehicles, power supply, signaling, and communication systems, which is crucial for ensuring operational readiness [2] - The opening of Line 17's middle section may face delays due to construction sequencing, particularly at Guanqumenwai Station, which is likely to be skipped during initial operations [4]