Literature Reference: On the southern hills there is the medlar, on the northern hills there is the elm. Happy and virtuous prince, may you live long without aging. Happy and virtuous prince, may your descendants be protected and prosperous. Source from 'The Book of Songs, Xiao Ya, Southern Fish with Delicacies, Southern Hill with Terraces'.
北: Direction, in the morning facing the sun, the side to the left hand, opposite to "south".
楰:
Meaning: Bei Yu carries a profound meaning, symbolizing resilience like the elm tree, longevity, and enduring blessings.