我姓杨却没有你想要的张扬
[wŏ xìng yáng què méi yŏu nĭ xiăng yào de zhāng yáng]
This translates to 'I am surnamed Yang but not as flashy/dramatic as you might expect.' It suggests modesty or a quiet demeanor compared to what the surname (Yang - typically associated with vibrant qualities) may imply, emphasizing humility despite expectations of extraversion.