Wuxi City, China
It is a light industrial city and is less Shanghai. Formerly known as Tsanshan, it was said that two millennia ago, tin production in this city. Later, the tin was drilled. But accidentally, people have discovered an ancient stone inscription that “there is a weapon of the land will not calm. If you do not have arms, the earth will be peaceful. “So it was changed to Wuxi, meaning no lead.