This is a tea ceremony held by Toyotomi Hideyoshi while he was staying at Hakozakigu Shrine for some time to scale town planning in Hakata after the Kyushu Conquest.
豊臣秀吉が豊臣秀吉九州征伐の後、暫く筥崎宮に滞在して博多の町割りを行っていた折に催した茶会。