Describe a poem that is a foregone conclusion and cannot be changed.

1, the past is sincere, and the road can still be traced. -Zhang Tang's nine-year-old "Travel Notes of the Old Residence of Xiaoyao Palace under Lishan Mountain"

2, I can't regret the past, I am self-defeating. -Su Song Shi "Ouyang Shubi visited Tao Yuanming and lamented his sense of absence"

3, the past has been lost, and this body is not returned. -Stone "Send Taoist Sword to Lushan Mountain"

4, if life is just like the first sight, what is the autumn wind sad painting fan. —— From "Magnolia, Antique Words and Cambodian Friends" by Nalan Xingde in Qing Dynasty

If we all get along like we met for the first time, how wonderful life would be, and there would be no pain of parting and lovesickness now.

5, it has been deep, but the reason is very shallow. -From: Gu Man Modern "Why Shengxiao Mo"