大概他喜欢黑夜而我姓孙
[dà gài tā xĭ huān hēi yè ér wŏ xìng sūn]
Perhaps he prefers the night, but I'm surnamed Sun (which sounds similar to the word for 'sunlight'). This reflects a play on words where the person contrasts their bright or cheerful personality ('sun') against another's preference for dark or somber moods.