 Originally called Ryōgoku Kawabiraki (両国川開き), the display had become an established tradition by 1810, and rivalries began to emerge over control of each year's festival.The "Tamaya" (玉屋) and "Kagiya" (鍵屋) guilds of pyrotechnicians quickly became the two major rivals, initiating the tradition of the competition.Each guild would try to impress the onlookers, out-doing the other guild, in order to gain popularity and support.