Ask the swallow for a letter to the hotel guests (pay attention to social etiquette)
Travelers: First of all, thank you for choosing to stay in this hotel where I built my nest, because your has made it possible for me to continue to settle here. In the past, the greening here was not good, there were no trees and no vitality. Later, the owner of the hotel where you stayed planted a batch of trees and flowers, creating a good environment for us swallows to come here. We have a home and made many beautiful silhouettes in the sky here. However, we are very sorry that our swallow can't control the excrement well, which affects your access and hotel business. We can't bear to see the innkeeper anxious, hoping to get the understanding of the passengers. You know, we can fly in the sky and settle down here, and we need the support of hotels and passengers. We need blue sky and bird's nest. Can you tolerate the inconvenience caused to you? Look forward to your visit!