I've read the document and find no specific descriptions about trackers' subscribe (for update the list from specific url). How should I do?

You haven't missed it in the documentation: Tixati does not currently have a native "Subscribe to URL" feature for tracker lists.

Unlike the "IP Filter" section, which allows you to input a URL and set an update interval, the "Trackers" section only supports static lists and presets.

However, you can achieve a similar result using Tracker Presets. While it won't pull from the web automatically every 24 hours, it allows you to update the trackers for all your torrents at once after a quick manual copy-paste.

How to manage tracker lists in Tixati

To set this up as efficiently as possible, follow these steps:

1. Create a Tracker Preset

Instead of adding trackers to torrents individually, use a global preset.

   Go to Settings > Transfers > Trackers.

   Click the Edit button under Tracker Presets.

   Click Add, give it a name (e.g., "Best Trackers"), and paste your list from your preferred URL (like GitHub).

   Pro Tip: In the main Trackers settings page, set your Default Tracker Preset to the one you just created. This ensures all new torrents use this list automatically.

2. Apply/Update Trackers for All Torrents

When you want to "refresh" your list from a URL:

   Go back to the Tracker Presets editor and update the URLs in your preset.

   In your main Transfers view, select all torrents (Ctrl + A).

   Right-click > Trackers > Presets > Select your preset.

   Tixati will immediately apply the updated list to every selected transfer.

Why doesn't Tixati have auto-update?

The Tixati developers have historically leaned toward a philosophy where DHT (Distributed Hash Table) and PEX (Peer Exchange) are considered more important than massive tracker lists. They argue that:

   Trackers are often redundant (many share the same peer database).

   DHT finds peers even if all trackers are dead.

   Large tracker lists can increase CPU and bandwidth overhead.

An Alternative: "Individual Tracker Options"

If you specifically want to block dead trackers or force certain trackers onto every new download without using presets, you can use:

   Settings > Transfers > Trackers > Individual Tracker Options

Here you can use the Remove From New tab to automatically strip out "deadwood" trackers that you know are no longer active.

Oh I got it. Though I still hope they could apply this in future :3

And another problem: localization files including words will replace texts that does belong to it, for example, if the file has translation
China
中华人民共和国
it will replace the word `China` in trackers' list (and any other places) like you mentioned above to the translated string. Is there any plan to optimize this? I'm happy yo make contribution for the localization, but seems the way they output strings were a bit strange and hard for me to finish the job.

However, thanks!

Junk text generator failed once again, and its clueless operator doesn't even care that it's a toy presented as a real instrument.

OP wants RSS. It's an extra feature, you can turn it on in settings or Interface section of the main context menu (right click the header buttons).