This sentence comes from the seven-character quatrain "Self-mockery" written by Yu Qian, a poet in Ming Dynasty.

The meaning of the poem is: wake up in the middle of the night, a person drinks an empty glass to relieve loneliness, put away his glass at dawn and start a new day, riding a horse and fighting in the world of mortals.

This sentence describes the author's cynicism and indignation, and expresses the author's satire and ridicule for the restlessness and revival of the Southern Song Dynasty.