Nov kuj yog Bishanzaj duab xis qhov av tsev cog khoomqhov project, nws yog qhov kwj ntawm cov tsev ntsuab, muaj shoulbe muaj thaj tsam 1 metre nruab nrab ntawm tsev cog khoom, thiab ua ib lub qhov dej ntawm cov tsev cog khoom, ces cov dej nag tuaj yeem ntws mus tau zoo.
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