研 研 yán Strokes9 Radical 石 — stone, rock, mineral Made of 石 stone, rock, mineral 开 to open How it's builtPhono-semantic — one part hints at the meaning, another at the sound Play the animation More about the character 研
制 制 zhì Strokes8 Radical 刂 — knife How it's builtPhono-semantic — one part hints at the meaning, another at the sound Play the animation More about the character 制