Chengyu of the day: 鹏程万里 péng chéng wàn lǐIn the Chinese classic Zhuangzi, there is a legend like this:
Once upon a time, a gigantic fish named Kun lived in the North Sea. No one knew how large it actually was. This fish could change itself into Peng (a roc), a huge bird measuring thousands of kilometers in length. When the bird spread its wings, it looked like huge clouds in the sky. It could, in one stretch, fly from the North Sea to the South Sea on the other side of the globe, and soar up to 90,000 li (45,000 kilometers) in the heaven.
The bird can surely fly over a long distance without stopping. Now people use this idiom to wish others have a successful career or a bright future.