Cang Yan was born nurtured by a spiritual stone, and traveled far overseas to study under a master and seek the Dao. After creating a great uproar in the Heavenly Palace, he escorted Qing Xuan to embark on the journey of traveling west to fetch scriptures. Having gone through eighty-one trials, he finally attained enlightenment and achieved the right fruit. Every tribulation is a practice of the inner heart. The so-called subduing demons and eliminating monsters is essentially conquering one's own delusional thoughts; the demons and monsters in the story are all illusions transformed from human obsessions. Traveling west to fetch scriptures is not about seeking true scriptures from the outside, but a practice of searching for one's original mind. The story borrows myths and legends of gods and demons to tell the truth of cultivating the mind and growing.