Is it easy to get taxi at mutianyu great wall to going back Wangfujing?

The distance is about 46 miles (75km), and the fare may be around CNY 300. But I am afriad that it may be hard to find a cab there. You may charter a van to Huairou North Avenue for CNY 50-60. Then, take bus line 916 Express to the terminus: Dongzhimen. Then, take a cab to Wangfujing for CNY 20-25. :)