Seong of Balhae, sometimes called by his birth-name Dae Hwa-yeo, was the 5th ruler of the Balhae

Balhae

Balhae was a Manchurian kingdom established after the fall of Goguryeo. After Goguryeo's capital and southern territories fell to Unified Silla, Dae Jo-yeong, a Mohe general, whose father was Dae Jung-sang, established Jin , later called Balhae.Balhae occupied southern parts of Manchuria and...

. He was the grandson of Emperor Mun, his father being the deceased heir Dae Goeng-rim.

Reign

He chose the era name Jungheung (중흥, 中興). King Seong was a very physically weak person, and lived for a few months after his rise to the throne. The most notable accomplishment that was done during his reign was the moving of the capital to Sanggyeong.