Maybe. HowNet duplicate checking system includes local database and Internet resource database, while Zhihu, Baidu Post Bar, community forum and blog articles are all included in the Internet resource database. Due to the fast update speed of Internet resources, the speed of the network database of the duplicate checking system may not keep up with the update speed of Zhihu content, so although the duplicate checking system of HowNet can detect Internet resources such as Zhihu, not all Zhihu content can be detected by HowNet.