Where petals have been shed like tears, it's shocking to hate cars. Who shed tears? Who is shocked? Tell me your reasons.

"where petals have been shed like tears, and lonely birds have sung their grief." The general explanation of these two sentences is that flowers and birds are originally entertaining things, but they hate parting because of their feelings, but they make the poet cry instead. Another explanation is that flowers and birds personify people, feeling sad when they leave, flowers also splash tears, and birds are also heart-pounding. Although the two theories are different, their spirit can be interlinked, one is touching the scene and the other is empathizing with things, which shows the richness of good poetry. The word "splash" uses a clever personification technique to show the author's helpless feelings and melancholy in the face of the decline and fall of the country at that time. From this, we seem to feel that the poet, who is aging before he gets old, is looking at the broken walls of Chang' an with tears in his eyes, and a kind of anxiety that is hard to get rid of comes to mind, and I can't help but sigh at the desolate scene of mountains and rivers and human resources. Then, helplessly, he gradually shifted his blurred vision from far to near to the flowers and birds in front of him. Perhaps flowers and birds, such impersonal natural things, are really infected by the poet's continuous sadness, and they can't help crying and heart-pounding for lamenting current events and hating parting.