Literature Reference: 霜仗凝逾白，朱栏映转鲜。 —— 《南至日隔仗望含元殿香炉》 The frost-covered guards grow whiter, and the vermilion railings reflect with increasing brilliance. Source from 'Nan Zhi Ri Ge Zhang Wang Han Yuan Dian Xiang Lu'.
朱: Vermilion, a deep red hue; the name of a mineral; an ancient geographical location; and a surname.
栏: Barriers: railings, wooden fences.
Meaning: The vermilion railings symbolize nobility and splendor, reflecting the solemnity and brilliance of the palace.