post here if you like the 3 brothers.
it was said by guan yu when he was caught by cao cao that zhang fei was twice as strong as guan yu.also lei bei out of all the first kings in the 3 kingdoms was the last to die .and that lie bei was oldest out of the brothers guan yu was second and zhang fei the youngest.thats why lei bei doestnt call zhang fei or guan yu brother because he is is older guan yu calls lei bei brother but not zhang fei, zhang fei called both of them brother