Generates a simple Chinese ink painting background with a small amount of clouds, the background is a light brown paper with ink spots, ink illustration style, color, enhanced graininess, no world, no people

生成一个简单的中国水墨画背景，有少量的云，背景是浅棕色的纸，有墨点，水墨插图风格，色彩，增强颗粒感，没有世界，没有人