Slogan technology

These two sentences use double rhetorical devices.

Duality usually refers to a rhetorical device consisting of two phrases or sentences, which are opposite to each other, with the same number of words, similar syntax, even and even, and related meanings. The dual relationship is close, concise and concentrated, and has strong generalization power; From the formal point of view, the front and back parts are uniform, the syllables are harmonious and disciplined. Strict duality also pays attention to levelness and makes full use of Chinese tones.