Architect Mr. Terunobu Fujimori's exhibition "Architecture with Nature, and ROJO" (September 29 - December 3, 2017) was held at Hiroshima City Museum of Contemporary Art. As a related event, a tea ceremony was held at a portable tea room designed by Mr. Fujimori. This was realized by offer to me from the museum side. The guests invited six people selected by lottery in advance.