The very famous “Kanda Myojin Shrine” in Japan made an event to celebrate the 1300th year. The first part is a celebration concert by Japanese artist Uzaki Ryodo. In the second part, a talk sessi on entitled “Block Chain as Life Cycle Support” was held. I gave a lecture on Co2 reduction in this talk session. The venue was fully occupied and we handed out “eco-woter”, a fuel efficiency improvement product for automobiles, as a souvenir. It was a valuable opportunity to give a lecture that can lead to awareness of global environmental conservation.