魏晋ぎしん南北朝なんぼくちょう時代じだいであれば
gishinnambokuchōjidaideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 魏晋南北朝時代

1. If the Wei, Jin, Southern and Northern Dynasties period…; When the Wei, Jin, Southern and Northern Dynasties period…

Ba Conditional