人情世故冷暖自知世态炎凉情比纸薄
[rén qíng shì gù lĕng nuăn zì zhī shì tài yán liáng qíng bĭ zhĭ bó]
The title suggests deep insight into social complexities, stating ‘Understanding human warmth and coldness requires one's experience’ and adds a bitter note with 'World conditions turn cold, yet emotions can become thinner than paper.' It conveys cynicism towards fleeting and insincere relationships and societal pretension.