What's the difference...

[Ed Reppert]

... between qi and ki?

[keftiu]

Spelling.

[Pronate11]

IRL? literally just a different translation of a chines word. Its also spelled "chi" sometimes. In game, I wouldn't be surprised if its the same thing, different spellings of the same word. Or someone just forgot that they spelled it "Ki" in the monk stuff.

[Martialmasters]

In game one uses focus points and is a Mechanic for monks and a dedication or two.

The other is flavor text basically.

[PossibleCabbage]

Qi is worth more points in scrabble.

[Temperans]

Chi uses the Ch letter in old spanish language rules.

[Grankless]

Qi seems to be specifically an air-aspected energy of some kind based on the jiangshi's breath stealing referring to it.

But also there's so little information about both that it's Impossible to tell.