"Not casting sidelong glances" literally means the eyes do not look to the side, describing a gaze that is focused and directed only straight ahead. Its deeper meaning emphasizes that a person is upright in character and free from distracting thoughts, unswayed by external temptations or interference; it also describes a high degree of concentration. This idiom originates from the Confucian idea in The Analects: Yuanyuan, "Do not look at what is contrary to propriety," and embodies self-restraint and moral cultivation. It is used in a wide range of contexts: it can praise someone for being upright and focused, as in "He is a man of integrity and does not cast sidelong glances"; it can also describe a state of concentration, as in "He read without casting sidelong glances." In emotional coloring, it is mostly commendatory, carrying a solemn and serious tone, and is sometimes used to describe someone who is reserved or old-fashioned. In terms of cultural background, it reflects the high regard in Chinese traditional culture for the gentleman's vigilance in solitude and observance of propriety.
📝 Example
1. In the library, he focused intently on the materials, completely immersed in his academic research. (Describing a high degree of concentration, undisturbed by external distractions.)
2. Facing various temptations, he remained focused and steadfast, upholding his principles. (Describing upright conduct, unmoved by temptations.)