What does Xi mean by "two hammers"?

Xi 'an's "two hammers" is a derogatory term to describe a person's recklessness and arbitrariness. Instinct is always greater than reason.

Another compliment means that a person is very generous. This meaning is only used between people who are familiar with each other, or between people who admire each other privately. Of course, basically these characteristics must be met: resolute, rude, not paying attention to others, and having feelings.