In this task, you're given passages that contain mentions of places and we are supposed to find the answer to a given question. Craft one correct answer to the question given in input. Make sure your correct answer is consistent with the context, and properly gives the exact location where the query was performed.
 In your answer, use as few words as possible from the given context. To be less repetitive, please vary your language for each question.

Sentence: In order to seek out the Karmapa, the Yongle Emperor dispatched his eunuch Hou Xian and the Buddhist monk Zhi Guang (d. 1435) to Tibet. Traveling to Lhasa either through Qinghai or via the Silk Road to Khotan, Hou Xian and Zhi Guang did not return to Nanjing until 1407. 
Question: Where did Hou Xian and Zhi Guang travel through on their way to the Karmapa?
through Qinghai or via the Silk Road to Khotan