Kev txhais ntawm kev sib txhuam zoo li qub
Yog tias ob qho khoom sib chwv thiab sib chwv sib luag, tab sis ib qho khoom zoo li qub tsuas yog muaj kev sib piv ntawm tus kwv tij nyob hauv qhov kev txiav txim ntawm sab nraud, tab sis tsis muaj qhov swb swb qhov tshwm sim, ces cov quab yuam ntawm lawv qhov chaw sib chwv yuav cuam tshuam rau tus txheeb ze swb. (Kev sib txhuam quab yuam tsim tawm thaum ob yam khoom sib txuam nrog ib puag ncig tab tom yuav tshwm sim tab sis tseem tsis tau nti tus kwv tij lub zog) hu ua kev sib txhuam zoo li qub