There are many possibilities for the next sentence of "The broken bridge is full of misery and the old people are mourning". The following are several common versions:
1. If you don't do it, you won't be a good person
2. Looking at the moon from the balcony, the moon is unclear
3. Listening to the wind on a rainy night without saying a word
4. The flowers on the other side are blooming and you can’t see them
5. Do you know who is far away? Hope
6. Looking back at the scattered place at the end of the world
7. A few petals of residual red fragrance filling the shoulders