Lub luag haujlwm ntawm cov hlau nplaum
Muaj kev sib cuam tshuam ntawm cov sib nqus, sib nqus ncej ntawm tib lub npe tshuaj, thiab cov hlau nplaum sib txawv ntawm cov npe sib txawv nyiam. Muaj cov tshuaj nyob ib ncig ntawm cov hlau nplaum uas tuaj yeem hloov tawm rab koob hlau. Qhov tshuaj no hu ua qhov chaw sib nqus hauv lub cev. Qhov chaw faib khoom siv hlau nplaum feem ntau yog qhia los ntawm cov kab sib nqus.