铁蛋子

• 釒(metal)RADICAL
• 戜(sound close to 'thiết')PHONETIC

A hard, dark gray metal that rings with the sound of steel is iron.

• 疋(foot; leg (sound similar to 'đản'))PHONETIC
• 虫(insect; reptile)RADICAL

An egg is what reptiles lay, with a round shape like a foot.

• 子(child (pictographic))ASSOCIATIVE

The character 子 depicts a newborn child with a large head and arms outstretched.