The entire ship’s company are working on rescuing the Prospero and these two are taking time out on the rec deck? Wheel and Cheung are both attempting to squeeze in a few minutes exercise in between extra shifts. This is why Wheel has not taken the time to change in to his his (canonical!) red tights.
Wheel’s practice sword is telescopic for ease of storage.
Part of the reason for this episode is that, while looking up tai chi on Wikipedia, I discovered that the sword for tai chi is called a taijijian, a word with five consecutive tittles!
With apologies to Gene Roddenberry and the many professionals and amateurs who have created the Star Trek universe over the years.
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