笑声刺人耳哭声入人心
[xiào shēng cì rén ĕr kū shēng rù rén xīn]
'Laughter stings the ears while crying touches the heart.' It means harsh laughter can irritate and wound while heartfelt weeping stirs deeper emotions. A person who selects this username possibly seeks contrast between superficiality versus profound emotion and could express a reflection on human nature's complexity and nuances of different behaviors/attitudes.