His works stem from an investigation of his home town of Jixi, a mining town in NE China. Jixi Research Project, ongoing since 2004, is a documentary-like archive of visual and spoken records of the lives of the people living in this town dominated by mining and the consequences of this industry on their lives and landscape. This piece is presented as a 4-channel projection with interactivity, emphasising the audiences participation in the story telling process.

For Sunflower Project, Zheng commissioned his family and friends to plant a large field of sunflowers in the hills surrounding the town of Jixi. The resulting artwork is an ultra-high resolution composite photograph of this field. On the one side in the distance is Jixi and on the other a memorial marking a mass grave of locals killed by the Japanese Army during the occupation of China during the Second World War. The sunflowers act as physical link between the living and the dead, a route of remembrance, reflecting during their short lives the remains of life and death all around them.