No braille blocks on the top of the main roof ring: Expo 2020 was supposed to be "diverse"

On the roof of the "Ring" at the Osaka Kansai Expo, I, a total blind person, was surprised and at a loss. I followed the tactile paving blocks that showed the direction of travel, and walked along the 2km corridor. Then, I came to a place where there were no paving blocks.