那天我们都在傻笑着幸福这天我们都在傻笑着哭泣
[nèi tiān wŏ men dōu zài shă xiào zhe xìng fú zhè tiān wŏ men dōu zài shă xiào zhe kū qì]
Means 'That day we smiled happily, today we cry the same silly smile' - juxtaposition of joy and pain indicating changes or twists experienced over time.