过客 is a social networking application that focuses on anonymous letter writing and making friends through slow social interactions. In a fast-paced and noisy world, this app provides a platform for users to meet like-minded individuals completely anonymously. The main concept revolves around genuine connections and sincere communication, encouraging users to be themselves without any facades.

Users can rediscover the art of letter writing and heartfelt expression by interacting with others through plain text and pure emotions. The app limits the number of pen pals and mailbox capacity, emphasizing quality over quantity in friendships. With a belief in serendipitous encounters and the beauty of unfiltered words, users can connect with interesting souls in a serene oasis of genuine connections.