how can i go to the great wall, summer palace from Jingtailong International Hotel by subway or bus

Your hotel is within walking distance from Qianmen MTR Station along local subway line 2. Therefore, it is suggsted to make full use of MTR.

Which section of Great Wall will you visit? If it is Dabaling, take subway line 2 at Qianmen to Jishuitan Station, walk from which to Deshengmen. Then you will easily find bus no. 919 or 880, either or which can take you to the wall directly.

If it is Mutianyu, you can take the same subway line to Dongzhimen. Then at Dongzhimen Outer to find bus no. 867, it will straightly take you to the wall.

As for the direction to Summer Palace, also subway line 2 helps. By it, you need to transfer to line 4 to Beigongmen Station, which is within walking distance from the garden.