画个逗号给昨天写个句号给明天
[huà gè dòu hào jĭ zuó tiān xiĕ gè jù hào jĭ míng tiān]
It translates as 'Drawing a comma for yesterday and a full stop for tomorrow.' This suggests not completely ending past regrets or stories (comma) but being determined and ready to close an unfinished chapter and start fresh the next day (full stop).