This project is about node classification and graph enhancement. In this project, you will attempt to enhance the expressive power of the graph by adding or removing a certain number of edges. We have pre trained multiple GNN models with fixed parameters to test the performance of the enhanced image you submitted. After the final submission, we will retrain the GNN model using the submitted images. Your final score will take into account both of the above factors. The dataset and code we provide is based on PYG package.