I found this as a post on another site. It is about an ancient Chinese technique used when growing watermelons. I’ve never heard of this and thought it was interesting…
During the day, the stone absorbs the sun’s heat, protecting the watermelon from its scorching heat. As night falls, the stone gradually releases that heat, creating a thermal contrast that stimulates the fruit’s ripening process, making it sweeter. It’s a simple agricultural trick, but it carries a profound understanding of nature and its effects on crops.
