Qhov no yog qhov kev pab cuam. Cov luam yeeb hauv hluav taws xob tau txais kev tsim kho tib neeg. Thaum siv ntau tshaj 15 - 18 luam yeeb sib law liag (yuav luag cov luam yeeb), lossis thaum siv ntau tshaj 8 - 10 vib nas this, qhov taw qhia yuav flash thiab lub roj teeb yuav tsis ua haujlwm. Qhov no yog ib qho kev tiv thaiv uas tuaj yeem ua rau tuag taus yog tias cov pa luam yeeb loj heev. Nws kuj yog ib qho kev tiv thaiv ntawm cov khoom siv hluav taws xob tiv thaiv kom tsis txhob muaj hluav taws xob ntau dhau.