To Survive, I Have Several Worlds to Back Me Up

There was a burst of bright light, the continent was shattered, and everyone was assigned to a two-meter-square island. Starting with a broken fishing net, how to survive? Everyone depends on their ability! But my brother is cheating. When others were still fishing with broken nets, I traveled to the world of the movie 2012 and bought a fully automatic fishing net. When others were using cold weapons, I traveled to the wandering earth and bought mechas. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.