Reading[]
I'm having some trouble with the first character's reading. The only reading I could find for 空 is kong (I'm ignoring the diacritic marks here for simplicity's sake). Where does the トン (ton) part come from? Did the author forget a character in this technique's name? I yes, which one? My first guess would be 中, but that's read zhong. And I'm really not sure if 中空 would make any sense in this context to begin with - most likely not.
I would be nice if someone who actually speaks Chinese could solve this riddle.
--Naishode (talk) 07:41, September 28, 2017 (UTC)