Here's another thing to consider: before he built up his inner power by consuming the snake organs, Yeung Gor had already learned the external techniques of several Greats, including Central Divinity Wong Chung Yeung, Ancient Tomb Sect Founder Lam Chiu Ying, West Poison Au Yeung Fung, North Beggar Hung 7 Gung, and East Heretic Wong Yerk See. In spite of knowing the external techniques of all these Greats, Yeung Gor was only a mid-level fighter until he acquired a tremendous boost of inner power from the snake organs. Only when his inner power reached that level was he able to knock on the door of Greathood himself.