question: Where did Hou Xian and Zhi Guang travel through on their way to the Karmapa ?
answer: through Qinghai or via the Silk Road to Khotan
turker_answer: Hou Xian and Zhi Guang travelled either through Qinghai or via the Silk Road to Khotan on their way to the Karmapa .
rule-based: Hou Xian and Zhi Guang travelled through on their way to the Karmapa through Qinghai or via the Silk Road to Khotan .