嗯是我忘了怎么笑
[ng4 shì wŏ wàng le zĕn me xiào]
'En Shi Wo Wangle Zeme Xiao' translates as 'Yes, I have forgotten how to laugh'. It conveys an atmosphere of melancholy, possibly referring to someone who is feeling depressed or has experienced significant troubles, leading them to lose the ability or desire to smile.