What does the phrase 'smooth blankness' refer to?

The phrase "smooth blankness" typically refers to a state of emptiness or a lack of content, often characterized by a calm, untroubled surface. It can evoke feelings of tranquility or indifference, suggesting an absence of emotional turmoil or chaos. This phrase may be used in various contexts, such as art, literature, or introspective thought, to convey a sense of stillness or the void of inspiration.