士 (shì): scholar; gentleman; person trained in a particular field (e.g., soldier, knight, professional)

He is a true warrior, never backing down in the face of difficulty.

This doctor's thesis received high praise.

A scholar can be killed but not humiliated; he would rather die than be disgraced.

The soldiers lined up neatly on the parade ground.

In ancient times, 'shi ren' usually referred to learned people.