《幼学琼林·卷三·人事》
境况逐步好转，兴味渐渐浓厚可说渐入佳境。言行举止傲慢不恭，谓之旁若无人。
将近好处，曰渐入佳境；无端倨傲，曰旁若无人。
The situation gradually improved, and the interest gradually grew stronger, which can be said to be getting better. Arrogant and disrespectful words and actions are called nonchalance.