娜姐快回快乐大本营
[nà jiĕ kuài huí kuài lè dà bĕn yíng]
'Sis Na, Come Back to Happy Base Camp'. Here 'Na' could refer to someone’s nickname like Xie Na (a well-known Chinese celebrity). This user seems to miss the show ‘Happy Camp’, one of the most popular variety shows on Chinese television.