Txheej txheem cej luam: Muaj sij hawm, hluav taws xob noj nqi yog soaring upwards thiab uas yog muaj tseeb tiag rau feem ntau ntawm lub teb chaws. Qhov uas noj roj pob txha tau raug rau hav lawm governments txhawj xeeb thiab. Nrhiav lub laub rau deploying ntsuab…