The quickest way for you: Take Metro Line 5 (bus stop 1 1) from Sanxi Station to Zhuangzhuang Station, transfer to Metro Line 6 (bus stop 6), get off at Exit D of Metro Cultural Park Station, walk to Kang Wang South Road Station and transfer to Bus No.79 (bus stop 1) and Bus No.79a (bus stop/kloc). Attention, please pay attention to the following line details: Peak Express 58 (every 20 minutes, 07:30-08:30)
In fact, you can walk more than 700 meters to exit D of Cultural Park.