March 7, cloudy, 18 degrees... It doesn't make sense to remember this thing, I'm not writing a diary.Lu Sheng, who was sitting at the computer desk, stared at the screen with a complicated expression, and typing on the keyboard with his fingers, but he always pressed and pressed the backspace key after typing a few lines of words.A special document in encryption format was opened on the laptop that I bought for a while. It was being written in the state. The file name is yellw duck, which means little yellow duck. This is a unique habit among programmers or some text workers. Telling his design ideas and story logic in detail to a little yellow duck will help clarify the ideas and inspire them. However, for some reasons, Lu Sheng could not speak directly, so he used the form of a document to replace it.