Left-Behind Village

At first glance, this village has mountains, water, chickens, dogs, three or two families, birds perching on the treetops, old women washing vegetables, urchins playing, and old men holding their trouser legs and carrying poles. It looks harmonious. But if I look closely, I feel that something is missing, but I can't figure out why... It seems like it shouldn't be like this... But it should be like this.