1, Lub twj tso kua mis yuav tsum siv lub ntsaws nrog ib tus pin hauv av, thiab xyuas kom meej tias lub hwj chim qhov hluav taws xob ntawm qhov ntsuas tau zoo hauv av.
2, Cov khoom siv hluav taws xob siv yuav tsum ua raws li cov khoom siv hluav taws xob tau teev tseg rau ntawm lub tshuab, txwv tsis pub lub tshuab yuav tsis ua haujlwm lossis txawm hlawv tawm ntawm lub rooj tsav xwm tseem ceeb ntawm lub tshuab.
3, Ua kom ntseeg tau tias cov khoom siv hluav taws xob ruaj khov thiab yoog raws.Yog tias lub zog hluav taws xob hauv cheeb tsam tsis ruaj khov, nws raug pom zoo kom tus neeg siv ntxiv cov khoom siv hluav taws xob tswj nrog lub zog sib xws.