Broke my heart.

Knock on the door

Knock three times

5 chocolate

Look at the sky.

7 Look at your lover

8 Qiao

9 pretty girl

…………

In fact, as long as the landlord hits the homonym of "bridge" or "bridge" on the music search engine, many songs will pop up, and then it is OK to find out what the landlord wants. That's how I found it.