downloads category and sub-catgory

The Category (C) tree is somthing like this
C1 http://www.tctfhlc-hk.net/index.php?page=downloads&type=browse&id=untitled-6
C11
C12
C2 http://www.tctfhlc-hk.net/index.php?page=downloads&type=browse&id=untitled-4
C21
C22
C3 http://www.tctfhlc-hk.net/index.php?page=downloads&type=browse&id=untitled
C31
C32

I'm taking a look at this now.
It might help if you can get me a login to your site so I can see more closely, or a screenshot at least.
However I think the URL issue is due to Chinese characters not being good for URLs. I'm giving that some thought now.
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I've added transliteration:
Here's the fix to do it:
sources/urls2.php
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- If not, please let us know how we can do better (please try and propose any bigger ideas in such a way that they are fundable and scalable).
- If so, please let others know about Composr whenever you see the opportunity or support me on Patreon.
- If my reply is too Vulcan or expressed too much in business-strategy terms, and not particularly personal, I apologise. As a company & project maintainer, time is very limited to me, so usually when I write a reply I try and make it generic advice to all readers. I'm also naturally a joined-up thinker, so I always express my thoughts in combined business and technical terms. I recognise not everyone likes that, don't let my Vulcan-thinking stop you enjoying Composr on fun personal projects.
- If my response can inspire a community tutorial, that's a great way of giving back to the project as a user.

two of the three view buttons lead to sub-categories
This is where I'm not following, I don't understand the nature of the structural problem you're having.
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- If not, please let us know how we can do better (please try and propose any bigger ideas in such a way that they are fundable and scalable).
- If so, please let others know about Composr whenever you see the opportunity or support me on Patreon.
- If my reply is too Vulcan or expressed too much in business-strategy terms, and not particularly personal, I apologise. As a company & project maintainer, time is very limited to me, so usually when I write a reply I try and make it generic advice to all readers. I'm also naturally a joined-up thinker, so I always express my thoughts in combined business and technical terms. I recognise not everyone likes that, don't let my Vulcan-thinking stop you enjoying Composr on fun personal projects.
- If my response can inspire a community tutorial, that's a great way of giving back to the project as a user.

But I find after added the English translation before Chinese characters, the "view" buttons are in order, i.e. jumping to where they should have been.
Thank you Chris for your great and prompt reply.

Transliteration is converting the script. In this case converting Chinese script to English/Latin/Roman script because that's what's used in URLs. See how "你好" automatically became "nin-hao" for the URL?
I'll take a look at GoDaddy's situation.
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- If not, please let us know how we can do better (please try and propose any bigger ideas in such a way that they are fundable and scalable).
- If so, please let others know about Composr whenever you see the opportunity or support me on Patreon.
- If my reply is too Vulcan or expressed too much in business-strategy terms, and not particularly personal, I apologise. As a company & project maintainer, time is very limited to me, so usually when I write a reply I try and make it generic advice to all readers. I'm also naturally a joined-up thinker, so I always express my thoughts in combined business and technical terms. I recognise not everyone likes that, don't let my Vulcan-thinking stop you enjoying Composr on fun personal projects.
- If my response can inspire a community tutorial, that's a great way of giving back to the project as a user.

Transliteration - Composr
I think you've given me site access (I haven't gone through my emails fully yet), so if so I'll install it for you.
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- If not, please let us know how we can do better (please try and propose any bigger ideas in such a way that they are fundable and scalable).
- If so, please let others know about Composr whenever you see the opportunity or support me on Patreon.
- If my reply is too Vulcan or expressed too much in business-strategy terms, and not particularly personal, I apologise. As a company & project maintainer, time is very limited to me, so usually when I write a reply I try and make it generic advice to all readers. I'm also naturally a joined-up thinker, so I always express my thoughts in combined business and technical terms. I recognise not everyone likes that, don't let my Vulcan-thinking stop you enjoying Composr on fun personal projects.
- If my response can inspire a community tutorial, that's a great way of giving back to the project as a user.

I deployed the new addon to your site, it's working well.
I did find a problem with the URL monikers, you had monikers in the cms_url_id_monikers table for download categories that didn't exist yet, so when new categories were made it re-used those old monikers. It looks to me like the cms_download_categories AUTO_INCREMENT value got changed somehow, as usually it will never re-use the same ID. I fixed that for you, and then the new monikers were generating nicely with my addon. I think this might have been the problem you were trying to explain that I didn't understand initially.
Become a fan of Composr on Facebook or add me as a friend. Add me on on Mastodon. Follow me on Minds (where I am most active). Support me on Patreon
- If not, please let us know how we can do better (please try and propose any bigger ideas in such a way that they are fundable and scalable).
- If so, please let others know about Composr whenever you see the opportunity or support me on Patreon.
- If my reply is too Vulcan or expressed too much in business-strategy terms, and not particularly personal, I apologise. As a company & project maintainer, time is very limited to me, so usually when I write a reply I try and make it generic advice to all readers. I'm also naturally a joined-up thinker, so I always express my thoughts in combined business and technical terms. I recognise not everyone likes that, don't let my Vulcan-thinking stop you enjoying Composr on fun personal projects.
- If my response can inspire a community tutorial, that's a great way of giving back to the project as a user.

Would it be even better if "/" could be used after transliteration instead of "%2F" in the url, i.e. in "id=tsui-ping-church%2Fjing-bai-bu%2Fjiang-dao-lu-yin"?

Yes, just enable a "URL Scheme" and the ID component will become a URL path component, it'll look much more natural without the % encoding.
Become a fan of Composr on Facebook or add me as a friend. Add me on on Mastodon. Follow me on Minds (where I am most active). Support me on Patreon
- If not, please let us know how we can do better (please try and propose any bigger ideas in such a way that they are fundable and scalable).
- If so, please let others know about Composr whenever you see the opportunity or support me on Patreon.
- If my reply is too Vulcan or expressed too much in business-strategy terms, and not particularly personal, I apologise. As a company & project maintainer, time is very limited to me, so usually when I write a reply I try and make it generic advice to all readers. I'm also naturally a joined-up thinker, so I always express my thoughts in combined business and technical terms. I recognise not everyone likes that, don't let my Vulcan-thinking stop you enjoying Composr on fun personal projects.
- If my response can inspire a community tutorial, that's a great way of giving back to the project as a user.

