What could the festivities of Aran Town— an 'off the beaten path' town between the central and northern portions of the Donghua kingdom— possibly be?
Answer: One involving nature, flowers, and the customs of the southern edge of Donghua, the former dragon immortal beast's domain.
The Night Flower Blooming Season originated in Southern Donghua, where the Night Flowers were native to, but a few varieties happened to survive in the less temperate climate of Central Donghua.
Aran Town was one of the most north-most towns where Night Flowers would bloom in the north-central area, and thus had a generous number of visitors in the fall, during its blooming season.