My Demon Monkey's Primordial Spirit Knows Seventy-Two Transformations

After transmigrating to another world, you, with your ordinary aptitude, are sent by your family to a sect, where you become its lowliest servant disciple. After years of grinding away, you spend your savings to grease a few palms and successfully get promoted to servant supervisor. On the day of your promotion, a sect steward comes to see you. “The sect elders have seen that you've served for years and always kept your head down. You're honest and steady. Your aptitude may be lacking, but you're dependable, so they've found you a good match.” “A political marriage?” “No, the bride is a disciple of a great sect. You'll have to marry into her family, and you have to pay the bride-price too.” “So I'm the only one getting the short end of the stick?” “That's not quite true... your father will have to make a small sacrifice too.” “What do you mean?” “The bride has a son. For her son's sake, you and your father will both have to take his surname.” … Unable to bear the humiliation, you refuse the marriage. The sect decides you're ungrateful and strips you of your supervisor post, sending you back to the bottom as a servant disciple. Luckily, a sacred site opens. Your luck is incredible: inside, you encounter the primordial spirit of a divine beast, a once-in-a-thousand-years find, as well as the primordial spirit of the [Spirit-Aware Stone Monkey]. Everyone else yearns for the divine beast's spirit and thinks the Spirit-Aware Stone Monkey is just an ordinary demonic monkey spirit. Only you know that one day, the Spirit-Aware Stone Monkey can evolve into the [Great Sage Equal to Heaven]! So, before everyone's eyes, you resolutely give up the divine beast and choose to merge with the Spirit-Aware Stone Monkey's primordial spirit. You successfully become the laughingstock of the world!