1, Arc-shaped puab thawv, boil tusyees.
2, Ob-txheej tshav kub-insulating plhaub qauv.
3, Pob tshab iav npog nrog tiv thaiv scalding hau tuav.
4, Floating cua sov ntse tswj qhov kub thiab txias
5, 8 lub ntsiab zaub mov ua haujlwm rau kev xaiv, yooj yim ua noj ua zaub mov qab