Stray birds of summer come to my window to sing and fly away. And yellow leaves of autumn, which have no songs,flutter and fall there with a sigh.

气候的变化不是一朝一夕的原因，它的由来是逐渐的。

我学得越多，就越意识到自己不懂的还有很多。

Where there is nothing, everything is possible. Where there is architecture, nothing (else) is possible.