Xiao Hua Xian 5: Sishi Hua Yu - Chun Xia 1: Chun

Fuente: AniList

This is the first part of a 4 parts story which consist of "spring" (this season), "summer" (season 5 part 2), "fall" (season 6 part 1), "winter" (season 6 part 2)