Iav muaj cov keeb kwm ntev thiab ruaj khov. Nws yog cov khoom siv zoo heev uas tau sawv lub sijhawm xeem. Nws tsis tuaj yeem siv rau kev kho kom zoo nkauj, tab sis kuj tseem yog cov twj paj nruag tseem ceeb hauv ntau qhov kev siv tshuaj kho ntau yam, thiab tseem siv tau los pab cov tuam tsev txuag hluav taws xob thiab txo suab nrov.
Los ntawm kev siv txoj kev sib txawv, peb muaj peev xwm muab cov iav sib txawv. Cov yam ntxwv ntawm cov ntaub ntim iav thiab cov txiaj ntsig zoo ntawm kev siv iav li ntim li cas?
Lub ntsiab nta ntawm cov thawv ntim iav yog: tsis muaj mob, tsw ntxhiab; Pob tshab, zoo nkauj, zoo thaiv, airtight, muaj ntau yam khoom siv raw, tus nqi qis, thiab tuaj yeem siv ntau zaus. Thiab nws muaj qhov zoo ntawm cov cua sov ua kom tsis kam, siab tsis kam thiab tu cov tshuaj tiv thaiv, thiab tuaj yeem ua kom tsis muaj qhov kub thiab txias thiab kub.
Nws yog qhov meej meej vim tias nws ntau qhov zoo uas nws tau dhau los ua cov khoom ntim khoom xws li npias, kua txiv ntoo, thiab qaub.