Nijiri guchi is a small entrance at a teahouse, whose size-about 60cm x 60cm(2ft x 2ft)-forces guests to vow before entering the tearoom.
Kinin guchi is an optional entrance besides Nijiri guchi at a teahouse, provided for nobles to enter without vowing down.
How to Use
Put your fists and knees on tatami mats, as you lower your head into nijiri guchi. Slide forward your knees to fully enter, and that movement, called njiru is the origin of nigiri guchi.
Njiriguchi(right) Chasodo in Okayama
Njiriguchi(left) & Kininguchi(right) Kaho-an in Kyoto
Njiriguchi Shokintei in Kyoto