Zero percent. Saifu Chuangzhi Cup is an annual student creative competition jointly sponsored by Shanghai Science Popularization Education Development Foundation, Shanghai Science and Technology Education Center and Yangpu District Education Bureau, covering all districts in the city. In recent years, it has been extended to the Yangtze River Delta. In the past nine years, students have submitted nearly 9000 creative works. All applications are free and belong to public welfare projects, with a gold content of 0%.