Enter any city and have at least twenty paintbrushes. Then use the 'floating paintbrush' trick to reach and jump on the city walls. Then, jump outside of the city. Because the land outside the city has not loaded yet, you can walk into the any of the bordering provinces without the 'turn back' message appearing. After walking so far into another province, your character will fall through the map and die. Save the game before attempting this. Because the ground is invisible (the trees, bushes, rocks can still be seen) it is difficult to tell when you will fall through.