再苦再累不说后悔再烦再厌不说再见
[zài kŭ zài lĕi bù shuō hòu huĭ zài fán zài yàn bù shuō zài jiàn]
'No Matter How Hard and Tired I Don't Regret; No Matter How Annoyed and Fed Up I Won't Say Goodbye' shows determination and endurance in overcoming challenges without regretting the difficulties or giving up when encountering frustration. This conveys strong perseverance.