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China's new iron battery hits 99.4 percent efficiency over 6000 cycles
(interestingengineering.com)
This is a most excellent place for technology news and articles.
That is exactly right, and simplified Chinese is actually extremely popular to learn here now. (Denmark)
And no wonder, they have become leaders of several key (future) technologies.
Counter point: I know exactly one person who learned Mandarin and several dozen who don‘t. Pretty much everyone learned english and (to a lesser degree) a third language that isn‘t Mandarin either. French, Spanish and Japanese are popular, though.