Let's say that during the Middle Ages, an English knight gets lost during the Crusades and ends up in China (Jin Yong universe). He's amazed by the incredible fighting arts of the Chinese...unlike anything that the knights of Europe can perform.
As a human being, this English knight has internal chi same as any other human being. With his Western upbringing, however, will he be able to learn it...even from great teachers such as Central Divinity Wong Chung Yeung or Cheung 3 Fung (this doesn't even begin to touch upon the language barrier)? Usually, the advanced inner chi cultivation techniques depend on a sophisticated understanding of Buddhism or Taoism. The English knight, being a Christian...can he possibly learn these techniques?