chaehwa
fire starting
allumage du feu
채화는 태양의 광선을 집중시켜 불을 만드는 방법입니다.
chaehwaneun taeyang-ui gwangseon-eul jibjunghamyeo bul-eul mandeuneun bangbeob-ibnida.
Fire starting is a method of creating fire by concentrating the rays of the sun.
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