What do you mean by Xia Yan's longevity?

"Xia Yan Eternal Life" is a blessing, which is used to wish someone a long life, health and longevity. Xia Yan was a scholar and politician in ancient China. He made great achievements in politics and culture, so he was honored as "Xiahou Zi" and became a symbol of longevity. Therefore, "Xia Yan is a hundred years old" is a blessing. I hope that the blessed person can live as long, healthy and successful as Xia Yan.