我会一直笑让你知道我很好
[wŏ huì yī zhí xiào ràng nĭ zhī dào wŏ hĕn hăo]
Conveys an intention to smile continuously as a way to convey well-being or resilience to others. This implies that, despite any underlying issues or feelings, they are choosing happiness or at least pretending it for another's peace of mind.