Firstly, the GF two-force rod is analyzed: the force line is a thin line at both ends of G and F, and the direction points to G;

Then analyze the AB rod, the stress direction of point A is horizontal to the left, and then draw the stress direction of point B by using the principle of intersection of three forces;

Finally, the CED rod is analyzed, and the stress direction at E is drawn by using the principle of three-force reuse.