The Lunar Harvest Festival.
It was a yearly event that held a lot of value to the people of Baekmin.
Martyred King Min II stressed heavily on how he wished for his Kingdom and People to be self sufficient, independent and headstrong.
He believed that Baekmin grew origin from each and every person who contributed to it's nourishment.
The Crowned King refused to rely on any of their neighbouring Kingdoms, albeit how closely situated they were.
Help from a foreign ally was a sign of weakness and Min Il refused to look inferior before just about anyone who wasn't his own.
"That's how it starts.." He'd say to his eldest son, Seokmin.