Xiechi Lake, also known as Yuncheng Salt Lake in China’s Shanxi province, has become popular on Instagram and other social media websites in recent years thanks to eye-popping aerial photographs of its colorful surface.Xiechi Lake, also known as Yuncheng Salt Lake in China’s Shanxi province, has become popular on Instagram and other social media websites in recent years thanks to eye-popping aerial photographs of its colorful surface.