1998, CCAST held an International Symposium on Early and Future Universe. Liu Jude was inspired by Zhuang Zi's essay Xiaoyaoyou, which says: “Praise the bird that named Peng (Roc), whose body extended several thousand miles long. When Peng flew, glorious to behold, His wings were the cloud in the sky, and all heaven rode on his back, nothing could contain him.” Professor Liu therefore painted a huge white roc with two spreaded wings symbolizing the universe as the poster for this symposium. This roc with its tremendous force and outspreading wings looks down from the top upon the earth, the wing feathers like vast clouds and vividly express the expansion of universe and the birth of the roc.