I Taught for a Thousand Years, Then Got Cast Out. Now I'm the Wicked Son, So Why Are You Crying?

[Feel-good power fantasy + striking out on his own + settling scores with the clan + never looking back] A thousand years ago, Lu Xuan transmigrated into this world and gave his life to suppress a Dao-imbued Golden Branch for his clan. After his spirit delved deep into the Golden Branch, he, a genius hacker, discovered that the underlying logic governing the Great Dao was astonishingly similar to programming! Over the next thousand years, he developed a programming language and derived hundreds of cultivation techniques, helping his family become one of the top cultivation clans in the mortal world, famous far and wide for the wonders of its techniques! His father, Lu Qi, even reached the Great Ascension realm and became a power to be reckoned with! But just as Lu Xuan spent a century transforming his own constitution, his clansmen blamed him for not producing any new techniques in a hundred years. His father even suspected he wanted to seize the Dao Fruit borne by the Golden Branch. He cast Lu Xuan out of the family, determined to leave the opportunity to his youngest son! Just then, the System unlocked. As long as Lu Xuan caused trouble for his clan, he would get a chance to enter a prize draw! So Lu Xuan broke with his family and spent his days figuring out how to sabotage the Lu clan. After his departure, the Lu clan could no longer create new techniques. Before long, they could not even use the techniques they already knew. Their business fell into decline, and their status plummeted. His parents and relatives had no choice but to search the world for him, begging him through tears to return to the clan. Lu Xuan faced them with utter sincerity. “Hang in there and don't die. I want to rebel for another ten thousand years!”