1. Cov ntaub ntawv sim rau hnab looj tes kub tiv thaiv kev ua haujlwm yog thawj lub paj rwb, tuaj yeem tiv thaiv zoo thiab tiv thaiv kub thiab qis, thiab feem ntau yog siv los ua cov hnab looj tes kub lossis hnab looj tes kub tiv thaiv.
2. Qhov thib ob yog tawv. Yog tias nws khaws cia kom qhuav, nws muaj qhov ua haujlwm tsis tshua zoo kub. Nyob rau tib lub sijhawm, nws qhov tsis-yaj thiab tsis yog yam ntxwv ua rau nws nquag siv vuam looj hnab looj tes.
Vim tias cov hnab looj tes tiv thaiv sab hauv yog nyob rau hauv kev sib txuas lus ncaj qha nrog txhais tes, nws yooj yim yuav tawv ncauj nrog hws tawm. Yog tias tsis kho, nws yog qhov yooj yim los ua cov hnab looj tes tsw thiab ua pwm. Yog li cuam tshuam rau kev siv thib ob.