Shenhai tawg-pov thawj
Tshawb nrhiav qhov tseem ceeb, txhais lus, thiab cov qauv ntawm cov paib tawg-pov thawj, npog ntau yam kev faib tawm thiab lawv cov haujlwm tshwj xeeb hauv kev ua kom muaj kev nyab xeeb hauv qhov chaw muaj kev phom sij.
Tshawb nrhiav qhov tseem ceeb, txhais lus, thiab cov qauv ntawm cov paib tawg-pov thawj, npog ntau yam kev faib tawm thiab lawv cov haujlwm tshwj xeeb hauv kev ua kom muaj kev nyab xeeb hauv qhov chaw muaj kev phom sij.