Because many versions are now circulating online. The first is the original version released on the official website, but it only has basic features. There are also many versions with extended features developed by netizens, including long-form speech and role-playing, as well as other personalized versions. The moderator has tested several versions; the best one to use is ChatTTS_colab_offline; this version has role-playing and long-form speech, and its generation quality is also relatively stable.