I found the original site more than ten years ago in university. Was amazed by the rich content. Thought it was probably a big well-funded academic project. A few years ago I learned it was done by a single person living in China out of pure love of our language. And he had trouble renewing his visa and had health problems. I was even more impressed. Now he has a very rare Chinese permanent residency for foreigners and has been able to monetize some of his work. I feel so happy for him. Thank you sir for all the great work.