Latex usage problems and skills summary (under update)

How to wrap lines without indenting

Similar to commonly used here

Add in front \noindent that will do , for example

\noindent \textbf{
    Theorem 1.}

Report errors Package inputenc: Unicode character , (U+FF0C) (inputenc) not set up for use with LaTeX.

If you write in English and use pdflatex, There will be such a problem , The error will somehow stay on the first line .
The reason is that Chinese appears in the text , It may be a Chinese character 、 Punctuation and even spaces , Need a little check , Very trouble .

Line break

\\ 

Space

\