\documentclass[tikz, border=10pt]{standalone}

\begin{document}

\begin{tikzpicture}
    % Draw the two thick lines l1 and l2
    \draw[] (-3,0) -- (3,0) ; % Horizontal line l1 (very thick)
    \draw[] (0,-3) -- (0,3) ; % Vertical line l2 (very thick)
    
    % Draw the diagonal lines
    \draw[thick] (-3,-1) -- (3,1); % Diagonal line
    \draw[thick] (-3,1) -- (3,-1); % Diagonal line

    % Add labels
    \node at (2.5,0.5) {$l_1$}; % label for l1
    \node at (2.5,-0.5) {$l_2$}; % label for l2
    \node at (3.3,0) {$l_{x_2}$};
    \node at (0,3.3) {$l_{x_1}$};
    % Quadrant numbers
    \node at (1,1.5) {1};
    \node at (-1,1.5) {2};
    \node at (-1,-1.5) {3};
    \node at (1,-1.5) {4};
\end{tikzpicture}

\end{document}
