It cannot be minimized to the tray, but it can be hidden. Personally I think the effect is better

The default hotkey is Alt + Z, press it again to restore

You can Tools>System Settings>Set in Other Settings

Don’t use those paid software for stock trading.

Flush and Great Wisdom are enough.

Use Great Wisdom after upgrading. It's not as easy to use as before,

But if you want to download it, just go to Baidu's official website.