The Chinese idiom "习以为常" is formed by combining four characters: 习, meaning "to practice" or "to become accustomed to"; 以, meaning "by means of"; 为, meaning "to become" or "to regard as"; and 常, meaning "usual" or "normal". These characters together create a literal sense of "becoming accustomed to through practice and regarding it as normal", conveying that repeated experience leads to something being perceived as commonplace.