Cov raj xa dej hauv chav kuaj yog cov cuab yeej tseem ceeb rau kev nyab xeeb thiab raug ntawm kev hloov kua lossis hmoov, kev lim dej, thiab kev sib cais theem. Txawm li cas los xij, kev xaiv hom raj xa dej tsis raug tuaj yeem ua rau muaj kev nchuav, kev lim dej tsis zoo, kev ua qias tuaj, lossis kev ua haujlwm qeeb. Phau ntawv qhia no piav qhia txog 9 hom raj xa dej hauv chav kuaj feem ntau thiab qhia thaum twg yuav tsum siv txhua hom. Koj tseem yuav pom tias siv tau yooj yim.