3.8 kilometers. According to Baidu map query, we can know that the high school of Zhaoqing No. 1 Middle School is the closest to Chang Dachang Supermarket (Xingcheng store). From the high school of Zhaoqing No. 1 Middle School, drive 10 meters to Xiangfu Road, then drive 390 meters to Xiangfu Road, and then enter Jiang Drive 1.5 kilometers on Bindi Road, enter Erta Road and drive 870 meters, turn left onto Heping Road and drive 780 meters, and finally enter Dongya Road and drive 340 meters to reach Changdachang Supermarket (Xingcheng store). The whole journey takes only 9 minutes and is 3.8 kilometers.