emperor duzong died shortly thereafter from overindulgence in wine but richard davis and other sources claim that, duzong died suddenly from a severe negligence of a palace doctor. in any case, he was succeeded by his sixth son, zhao xian (emperor gong), who was then only four years old. although emperor duzong was technically not the last emperor of the song dynasty, historians see him as the last song emperor who could have made decisions that would've significantly halted or even prevented the fall of the dynasty.