Cov kauj ruam los kho qhov nruj ntawm cov tsheb laij teb tsis hloov pauv:
1. Tshem lub tais diav rawg tiaj tus
2. Qhib lub qag qaum ntawm sab laug thiab sab xis
3. Qhib cov ntsia hlau kho ntawm lub thawv nres
4. Kho qhov kho qhov ceev ntawm ob sab ntawm lub nraub qaum
Ua tib zoo saib xyuas kev hloov pauv thiab sib npaug ntawm ob sab. Kev hloov kho saw yuav tsum nruj, thiab kev ua haujlwm yuav tsum yoog raws. Lub caij nplooj ntoo hlav yuav tsum tau teeb tsa sab nrauv, thiab qhib qhov kawg yuav tsum yog qhov sib txawv ntawm qhov kev taw qhia ntawm kev txav mus los, thiab yuav tsum tsis txhob rub tawm tsam cov npog npog thiab crank.