Cov qhov ncauj qhov ntswg tau muab faib ua ob qho tib si thiab ob qho tib si. Tus nqi ntawm cov qhov ncauj qhov ntswg xws li tsis siab, thiab kev tiv thaiv tsis yog superior; thiab cov kws kho mob siab tshaj plaws yog siv los ntawm cov kws phais los yog cov kws kho hniav, tsom ntsoov rau cov khoom tsis zoo ntawm cov khoom, qhov cuab yeej thaiv cov dej haus, thiab kev hnav cov chaw ua hauj lwm. Ua tsis taus pa.
