接下来请你用英文回答分别详细以下两个问题：“Who is Xuan Zang?Tell his story in your own words."

Xuan Zang, also known as Hsuan-tsang, was a Chinese Buddhist monk and scholar who lived during the Tang dynasty. He is best known for his 17-year pilgrimage to India in search of Buddhist scriptures, during which he traveled over 10,000 miles on foot and encountered various challenges and obstacles.

Xuan Zang was born in Henan province in 602 CE and joined a monastery at a young age. He became interested in Buddhism and learned about the teachings from various monks and scholars. However, he felt that the Chinese translations of the Buddhist scriptures were incomplete and inaccurate, and longed to travel to India to obtain the original texts.

In 629 CE, Xuan Zang set out on his journey with several companions. They traveled through various regions, including the Gobi Desert and the Pamir Mountains, and encountered bandits and treacherous weather conditions along the way. However, Xuan Zang persevered and eventually reached the famous Buddhist university of Nalanda in India, where he studied for several years and collected many Buddhist texts.

Xuan Zang returned to China in 645 CE with over 600 Buddhist texts and spent the rest of his life translating and preserving the scriptures. His translations greatly enriched the knowledge of Buddhism in China and facilitated its spread. Today, Xuan Zang is revered as a great monk and scholar in both China and India.