In Mandarin Chinese, 火 (Pinyin: huǒ 🔊) means “fire”.
Fire is one of the five elements of Wǔ Xíng. You can think of 火 as a representation of wood and flame in a hearth or a bonfire. Some historical forms of this character look even more like children’s drawings of fire.
More photos of fire and sea glass @ Shutterstock.