心不动则不痛心若动必定痛
[xīn bù dòng zé bù tòng xīn ruò dòng bì dìng tòng]
This expresses a philosophy that when one’s heart remains undisturbed, there will be no pain. But as soon as it starts feeling love or passion, it inevitably brings suffering. In essence, this netizen name implies that emotional detachment prevents emotional wounds while getting emotionally involved can lead to heartache.