1997年，艺术家颜磊与洪浩一起合作制作了100封德国卡塞尔第十届文献展邀请函，并将其邮寄给许多中国艺术家。引起了艺术界的轩然大波，心理的震撼给艺术带来了在概念／权力／身份／价值系统的反思。

In 1997, artists Yan Lei and Hong Hao created this project: they co-produced 100 invitations for Documenta-Kassel and mailed to a number of Chinese artists. This fact caused sensation and big rumours in the art world; the psychological shock gave the artists a moment of reflection about system of value around conceptual / power / status.