The mini-lecture on open-chest surgery was over, but everyone still couldn't get enough. They asked to replay the surgical images more slowly.
The chest cavity, split open from the sternum in the middle, opened to both sides, the exploration went from the front to the back, all the way to the spine on the rear side, leaving no blind spots, no omissions; Likewise, the abdomen, also with a vertical incision, fully opened to both sides, fully revealing the injured areas.
In this case, there were two short nails on the wooden stake, which had punctured the abdominal aorta. Looking at the images, when the injured aorta was revealed, the nails were still hooked in the abdominal aorta.