Zoo meej rau kev yuav khoom txhua hnub, nws tseem tuaj yeem siv rau kev tshaj tawm, tuam txhab khoom plig lossis txhua yam xwm txheej, kev sib tw lossis tsim lub tuam txhab tshaj tawm, nthuav tawm thiab lwm yam.

Lus ceeb toom: 

1. Hais txog qhov loj: Vim kev ntsuas phau ntawv, tej zaum yuav muaj qhov yuam kev ntawm 1-2 cm loj. Cov kev ntsuas no yog tsim los pab koj xaiv qhov loj me. Thov ntsuas koj tus kheej thiab xaiv qhov loj me.

2. Hais txog xim: Cov xim tiag tiag ntawm cov khoom yuav txawv nyob ntawm seb cov khoom tshwj xeeb, kev teeb tsa, thiab teeb pom kev zoo. Cov xim ntawm cov khoom tau piav qhia tsuas yog siv rau kev siv xwb.