ThinkPad E14 reinstall system Ubantu

1. Install Ubantu

Too many tutorials on the Internet are about installing virtual machines and dual systems. I just want a pure Ubantu system
Ubantu tutorial: This blogger writes very detailed and detailed
preparations for system startup disk and bios installation. You can directly follow this blogger's tutorial. , it’s very detailed, so I won’t repeat it.

Then let’s focus on how to open Bios on this bastard ThinkPad E14.
I really tried F1-F12, Fn+F1-F12, Enter, and Esc many times. Even if I tried it, I wouldn't feel well.
Open site b, there are many good people: ThinkPad reinstallation system experience
md, if you keep restarting and pressing F12, it will be of no use at all. It is recommended to open Windows, click Restart and then press F12. Only in this way can it be opened. The ThinkPad seems to be in trouble.

If you are reinstalling the system, use F12, open Bios, F1

and select try or Install Ubuntu. The next operation is the same as the blogger above

2. Install Qt6.5.2

Since Qt5.15 and later does not support offline installation, it must be installed online.
Refer to bloggers: Blogger 1 and Blogger 2.
The details are useful and will not be repeated.