忘了多久满心欢喜却微不足
[wàng le duō jiŭ măn xīn huān xĭ què wēi bù zú]
'Forgot How Long Since Full-hearted Joy Yet Insufficient' reflects bittersweet memories—having once experienced overwhelming happiness which over time has faded to insignificance, evoking wistfulness about changes in life and sentimentality for better times past.