Where is the permanent free forum?

There are the following permanent forums to provide services:-Baidu Post Bar: one of the largest interest exchange communities in China, Baidu Post Bar provides forums on various topics. -Shell Network: Shell Network is a forum with the theme of scientific, humanistic and cultural exchanges. -V2EX:V2EX is a forum dedicated to science, technology and life. Tianya Community: Tianya Community is one of the largest sex forums in China, providing a platform for topic discussion and exchange. -Zhihu: Zhihu is a knowledge sharing and Q&A community. Registered users can ask questions, answer questions and participate in discussions. Please note that although the permanent forum service is provided above, you may need to register your account or log in to participate in the discussion.