中指

shù zhōng zhǐ

竖中指

extend one's middle finger

tā zhōng zhǐ shang dài zhe jiè zhi

他中指上戴着戒指。

He was wearing a ring on his middle finger.

nǐ de zhōng zhǐ zhǐ xiàng yòu bian

你的中指指向右边。

Your middle finger pointed to the right.