Night visitors changed their pen names.

Night guest didn't change his pen name. His real name is even Wang. He is a famous late architect, urban planning expert, photographer, traveler, writer and poet. During his lifetime, he served as a visiting professor in many universities, as a consultant in many cultural institutions, and held many exhibitions of personal photography and architectural works at home and abroad. His works and speeches are deeply loved by readers, and his pen name "Night Guest" has become one of his symbols.

Regarding the "night patrol" you mentioned, I don't know the specific situation. I may need more background information to give a more accurate answer. If you have other questions or need further information, please feel free to tell me.