Engi (era)
Engi (延喜?) was a Japanese era name (年号,, nengō,?, lit. "year name") after Shōtai and before Enchō. This period spanned the years from July 901 through April 923. The reigning emperors were Daigo-tennō (醍醐天皇?).
Read more about Engi (era): Change of Era, Events of The Engi Era