Lub luag haujlwm ntawm qhov kev tiv thaiv qis dua ntawm lub tsheb: 1, txhawm rau txhawm rau txhawm rau lub cav, lossis siv cov khoom siv hauv qab, ua rau lub cav sib tw, thaum khaws lub cav sib xyaw ua ke. 2, Thaum kev sib tw, nws tuaj yeem tiv thaiv kom tsis txhob ua rau kev sib cais mus rau hauv lub cav sib xyaw, thiab tiv thaiv qhov hluav taws xob los ntawm cov dej ntub thiab ua rau muaj teeb meem.