2028年に日本は産油国に！サウジアラビアの10倍の天然ガスが眠る第7校区があった！Japan will become an oil-producing country in 2028! There was a 7th school district where 10 times more natural gas sleeps than Saudi Arabia!

https://www.facebook.com/masahiro.ishizuka.54/videos/338051351101981

https://video.fc2.com/content/20210718NWbyVvu3

https://www.linkedin.com/feed/update/urn:li:activity:6822524261509554176/

https://www.youtube.com/watch?v=2YLhf_KtWcQ