Literature Reference: 二纪烟尘外，凄凉转战归。—— 《太和公主还宫》 Beyond the dust of two decades, she returns from the desolate battlefield. Source from 'The Return of Princess Taihe'.
二: The sum of one plus one.
纪: The original meaning refers to the end or thread of scattered silk, which metaphorically extends to signify age, years of life, principles, and systems.
Meaning: Two decades symbolize resilience and the accumulation of time.