
Title:
野立茶器 (nodate chaki)
open-air tea utensils
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This piece depicts open-air tea utensils. In spring or autumn, sometimes tea ceremonies are held outdoors so that the participants can enjoy nature and beautiful weather while drinking their tea with seasonal treats. Open-air tea ceremony is sometimes held at temples or shrines.
Another view:

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Hiroi Michiaki: And, ah, these are tea utensils. For open-air tea ceremony.
Mrs. Hiroi: Open-air tea.
Hiroi Michiaki: It’s for setting up tea outdoors, green tea. So it’s the same as the tea we’re drinking now.
Mrs. Hiroi: You drink it outside.