One can capture the traces of painting and photography at the same time in Developer Paintings. Sun Yanchu fuses the energy of both, which create a new context and aesthetic. This is a new experience like no other. Sun Yanchu uses the medium of photography as a raw material to create his chemical paintings and darkroom prints. But the making process is done without using a lens or camera but rather with chemistry, photographic paper, and brushes. One thing to do is to control the chemicals, temperature, lighting, and development process to reveal the unique effects in his developed works.

He says that the process of creation and the result of development - the layers of black ink and gradations of color - are extremely like traditional Chinese painting and calligraphy which he has been exposed to since childhood. Developer Paintings by Sun Yanchu combines his passion for traditional Chinese painting with the creation of modern Western photography.