我不姓商为何心伤
[wŏ bù xìng shāng wéi hé xīn shāng]
This nickname 'If I don't have the surname Shang (a surname with a meaning related to commerce), then why does my heart hurt' is a person expressing that their pain and worries are not because of material gains or losses but due to emotional reasons. It reflects the owner’s melancholy, possibly stemming from unfulfilled feelings that aren't tied to superficial matters such as wealth.