13.14.15.16.17.18.19.20.21 how to fill in Jiugong grid
16 21 14 15 17 19 20 13 18 please select "can solve the problem" in the evaluation and use five stars for evaluation. If you are not satisfied, please ask
16 21 14 15 17 19 20 13 18 please select "can solve the problem" in the evaluation and use five stars for evaluation. If you are not satisfied, please ask