Dab tsi yog qhov kev tshem tawm qhuav rau?

Ib yam li cov cim ntub dej, cov cim qhuav qhuav ua haujlwm ntawm cov ntawv dawb, cov ntawv teev npe, iav lossis lwm yam uas tsis muaj qhov ntxeem tau. Qhov sib txawv tseem ceeb tshaj plaws ntawm cov ntawv pov tseg qhuav thiab ntub cov cim pov tseg yog tias cov cim pov tseg qhuav yog yooj yim los so, ua rau lawv xaiv qhov zoo tshaj plaws rau kev siv ib ntus.