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In page AD 1000:

"
  • Ichimonjiya Wasuke, the oldest surviving wagashi store, is established as a teahouse adjacent to Imamiya Shrine.
  • January 10: Death of Empress Dowager Masako (empress consort of the late Emperor Reizei)[citation needed]
  • April 8: Fujiwara no Shoshi is promoted to Empress (Chugu), while there is another empress, Fujiwara no Teishi (kogo) - this is the first time that there are two empresses[2]