1. Cov khau khiab pov tseg yuav tsum muaj cov dej tsis zoo thiab siv tau hauv ib qho.
2. Cov khau npog yuav tsum hnav thaum nkag mus rau thaj chaw muaj kab mob los ntawm cov chaw muaj kab mob thiab cov chaw siab tsis zoo los ntawm cov chav tsis nyob.
3. Cov khau khiab pov tseg yuav tsum tau hnav nyob rau hauv cheeb tsam uas tau xaiv thiab tshem tawm tam sim ntawd thaum tawm hauv cheeb tsam. Yog tias pom muaj kev puas tsuaj, nws yuav tsum tau hloov raws sijhawm.