The Courtyard Is Deep

In fact, the courtyard is not big, but every time I walk in, I feel that it is so deep... In fact, I didn't feel this way many years ago, but suddenly I did after many years... In fact, there used to be an old man in this courtyard, but now the old man is no longer there... In fact, sometimes, nostalgia can become very wide and long, covering this deep courtyard... Intention: