Bestride The World With Divine Eyes

Ye Xian's foster father had disappeared, leaving him to care for his sickly sister. With no one else to turn to for assistance, he sought help from his betrothed's family. 
He was supposed to be the Mu family's son-in-law, but he was treated worse than slaves, and even slaves bullied him. He persisted, unable to simply leave. After all, he still needed the Mu family patriarch's assistance in locating his foster father. But would the Mu family patriarch really help him? 
Actually, becoming a martial artist was another way to gain power. But it was as if the heavens were conspiring against him. He couldn't keep a single ounce of spiritual energy no matter how hard he worked. It was as if some beast was sucking the life out of him. 
Will the heavens finally have pity on Ye Xiao and grant him a way out now that he is in two stalemate situations, or will he forever remain useless? Will he ever track down his foster father? What was siphoning off his spiritual energy? Can Ye Xiao one day become a cultivator?