1. Register as a member of China HowNet: some documents need to be recharged and downloaded;
2. Sometimes the school library will have a free HowNet account and password for external network login;
3, find a free number, these are time-sensitive, free accounts can be found directly online;
3. If you want to download the literature, you can also download it from OA library. Although there is not as much data as HowNet, it can meet some of your requirements.