The movie is based on the suspense short film nominated for the Golden Méliès to the Best European Fantastic Short Film, winner of more than 30 awards and screened by more than 200 film festivals. It was defined by the critics as "a cult short film".当家的发话了别人就算有意见也只能这样，柳青青从破烂堆里翻出一张地图，楚翔仔细研究了一下，虽然是长江三角洲，但不表示没有丘陵，还有海拔三百多米的残丘呢，不过更多的则是纵横交错的湖泊河流，只是持续的低温降雪让所有水域都结冰，而大雪覆盖了地面，如果偏离公路而行只怕会有陷入水中危险。