Caiyun Yuhai newspaper gradient color

Quick answer：

Caiyun Yuhai refers to the South China Sea, which is a region known for its diverse marine life and rich cultural heritage. The term 'gradient color' in this context likely refers to a design feature on a newspaper related to the South China Sea, possibly depicting a gradual change in colors or a visual representation of the sea's depth and marine ecosystem. This could be an artistic or thematic element used to enhance the newspaper's appeal or convey a message about the region.