[mtremsal]

There are a lot of possibly exaggerated, and somewhat dubious, legends about Cheng Man Ching (who created the "Yang style" I believe). In one such story, he performs an exhibition match at the British Embassy in Chungking during WWII, and none of the British soldiers manage to land a single hit. In the story, the British army ends up so impressed they decide to study T'ai Chi.

[shwaj]

Yang Luchan was the creator of Yang style taijiquan.

[mtremsal]

Ah yes, thank you! The Cheng Man Ching so-called "short form" would be considered a descendant/variation of Yang style then. I assume we're more familiar with Cheng Man Ching in the West due to his travels and teachings in the US. Hard to say how closely related to the source modern-day lessons are TBH.