Continuity mistake: When Eugene finds the note from Ae-sin in the barn, in the shots where the camera is on him, he is holding the paper near the top. When the camera is on the paper, his hand is nearer towards the middle of the page. (01:10:02)
Continuity mistake: When Hina turns around to stab the man behind her, it is revealed that it was Dong-mae, who grabs onto her arm. At first, we can see his hand is positioned a few inches away from her the edge of her sleeve. The next shot, he is holding onto the edge of the sleeve. Then in the shot after that, he is a few inches away from the edge of the sleeve. (00:06:33)
Continuity mistake: When Eugene begins eating the piece of paper, in one shot some of the paper can still be seen outside his mouth. When the shot cuts to focus on Moore, none of the paper can be seen outside his mouth. It is now entirely in his mouth even though it wasn't in the previous shot. (00:53:13)