Thawj qhov yuav saib yog seb cov ntaub puas yog cov khoom siv tshiab. Vim tias cov ntaub npuag tsis yog ntaub yooj yim, nws yuav cuam tshuam loj heev rau kev pab lub neej ntawm daim ntaub thaum nws nquag dhau lawm. Cov khoom siv tshiab feem ntau muaj qhov sawv zoo thiab tawv. Cov.
Qhov thib ob saib ntawm kev luam ntawv, qhov zoo ntawm luam tawm ncaj qha cuam tshuam qhov zoo nkauj ntawm lub hnab tsis-ntaub, noj npo npo, ntus silk npo txawv yog qhov tsis zoo, tsis muaj qhov pom huab cua qhov, yog tias nws yog xim luam ntawv, nws nyob ntawm seb xim raug yog Seb puas muaj qhov txawv txav tsis sib xws.
Tus txheej txheem xaws thib peb, rau lub hnab tes, qhov zoo ntawm txoj kev xaws ncaj qha cuam tshuam rau kev khov kho ntawm lub hnab. Feem ntau hais lus, ib xees yuav tsum muaj peb rab koob kom pom tias koob xov yeej zoo, tshwj xeeb yog hais tias muaj rab koob poob. Txoj haujlwm, yog tias rab koob tsis nyob hauv qhov chaw, lub qhov ncauj ntawm lub hnab tuaj yeem sib dhos tau yooj yim, thiab muaj qhov tshwm sim uas lub hnab ntim tau muaj lub hnab tav, uas tseem cuam tshuam loj heev rau qhov zoo nkauj ntawm lub hnab.
