The theme of the keycap is taken from a poem by Gong Zizhen, called "Two Poems on Night Sitting - Part 2"; the entire poem is applied to the root of the letter area of the keycap, using light colors to balance the picture.
This is a classic work of self-encouragement by the poet; what I like most is the last sentence, "In case the Zen barrier is broken, the beauty is like a jade sword and a rainbow." The jade-like beauty and the rainbow-like sword energy are what the poet said. He yearns for a free and unrestrained career in the world, but he is in an official career, which limits his lifestyle to some extent. At the same time, I also want to express the situation that many young people today have to deal with due to various pressures in life.