Cov ntaub ntawv tsis zoo yog vim nws cov yeeb yam zoo heev, los ntawm txoj kev hlub ntawm ntau txoj kab, daim ntawv thov yog qhov dav, tsis muaj plua tshauv plua plav xwb qhov kev siv tau yog qhov ua tau zoo tshaj plaws, yuav ua li cas siv cov ntaub ntawv tsis muaj plua plav lawm?
Cov nram qab no me me los ua ke rau cov hauv qab no:
1. Thaum siv thiab hnav, koj yuav tsum hnav cov hnab looj tes thiab lub qhov ncauj qhov ntswg.
2. Cov ntaub ntawv tsis pub muaj peev xwm muab pov tseg rau hauv qhov hnyav rau so, kuj tuaj yeem yuav so ncaj qha, kom yooj yim.
3. Siv lub sij hawm siv, tsis pub npuab tsis muaj plua tshauv plaub ntawm plaub sab npoo sab hauv, tsis txhob siv daim ntaub npuas av dawb los npuaj rau ntawm qhov chaw so.
4. Siv ntaub ntim khoom tsis muaj plua plav, yuav tsum nyob hauv ib qho chaw huv si kom tsis txhob muaj lub hnab ntim rau sab hauv, thiab ua ntej qhib lub hnab los ntxuav, tshwj xeeb tshaj yog cov qhov yuav qhib kom huv. 5. Thaum siv ua ntaub ntawv, cov ntaub so plag tsis muaj plua plav yuav tsum tuav ca, tsis tuaj yeem txuam rau hauv txawb xov tooj, kom ntev li sai tau rau ntaub qhwv thiab siv daim ntaub ntim kom cuag tau tag nrho, tab sis kuj yuav xyuas kom meej tias tib qho kev coj mus so, tsis tuaj yeem rov qab mus so rov qab.