... tias "lug txaj or khawv txhiaj"....which is a little different from what i was taught. as for kwv txhiaj. tej laus yeej hais tias "kwv" is from "kws"...xws li tus "kws txhiaj"...or the "master of ridddles" xwb. piv xam tias X yog ib tis "kwv txhiaj (kws txhiaj)"..nws paub hais "khawv txhiaj". tej laus qhia mas yog li no...i have not heard of "kwv txhiaj (in terms of songs) until kuv ...