Baidu forum
You can check related forums, such as "Xiaomi Resource Network", which has a free trial account and can download papers for a period of time for free!
University library
The IP addresses of some colleges and universities have purchased the download copyright of China HowNet, which costs hundreds of thousands of copyright fees every year. This is the case in our school, so it is free to download in university libraries or electronic reading rooms!
Baidu Knows
Baidu knows that someone (such as those upstairs who "QQ is XXX") bought an account. You can ask questions for help from Baidu, but the wealth value and RMB price are also expensive!
Hunan Provincial Library
I recommend that you go to a "joint online consultation" forum established by Hunan Library to post for help and download (Baidu "joint online consultation"), which is also free!