Black Certificate is a performance that encompasses all elements like sculpture, installation, lighting, sound, interactivity, video, painting, drawing, and so on. Performance can be site-specific, narrative, conceptual, and interactive. The outcomes were multi-dimensional display works of video, photography, installation, and drawing. It was a bit like a ritual using certificates with a special meaning. Videos were from multiple cameras on one screen. Yunqiu Li had done some drawings on the certificates and even destroyed them (the certificates) based on her thoughts about honor, life, and herself. Certificates after use could be destroyed as recycling, which also can become a drawing and installation or sculpture.