Mej cov tub kws noob nyoog muaj yim nub, yuav tsum muab ua kevcai txav. Mej yuav ua le nuav rua cov txwvneej txhua tug huv mej haiv tuabneeg txhua tam moog le, tsw has cov kws yug huv mej tsev hab cov kws mej muab nyaj yuav lwm haiv tuabneeg lug kws tsw yog mej le mivnyuas. Cov kws yug huv mej tsev hab cov kws muab nyaj yuav lug yuav tsum ua kevcai txav. Ua le nuav mas kuv tej lug cog tseg txhad nyob huv mej tej nqaj ua lu lug cog tseg moog ib txhws.