What does it mean to let out the wine and ice and watch the full moon?

On the afternoon of 20 13165438+10.24, the opening ceremony and award ceremony of "Flying with God and Dreaming of Heaven" 20/kloc-0.3 China Dream China Aerospace Culture and Art Exhibition was held in Beijing National Culture Palace. The official script couplet created by Cao Yu, chairman of Heze Book Association, ranks first in the honor list of "flying wine and ice and watching the full moon".