伤脑筋 (shāng nǎo jīn)

to be a real headache; to find sth a real headache; to beat one's brai

Character breakdown

伤 (shāng) · 6 strokes

Simplified form of 傷. Phonosemantic compound. 亻 represents the meaning and 昜 represents the sound.
脑 (nǎo) · 10 strokes

Simplified form of 腦. Phonosemantic compound. ⺼ represents the meaning and 𡿺 represents the sound.
筋 (jīn) · 12 strokes

Bamboo-like ⺮ tendons in the chest 肋