A herd of 15 wild Asian elephants broke into a villager's house and ate the villagers' corn after breaking through an iron gate. The herd has traveled for nearly 500 kilometers in the past 40 days, keeping a north and northeast trajectory. And now they're only 100 kilometers away from the downtown area of Kunming, provincial capital of Yunnan Province. It is alarming because the northern part of Yunnan is much more populated than the southern part. Animal experts said it's common for wild elephants to migrate, but not so common to keep pushing north like this herd. Why did the elephants leave home and take the long journey? When will they go home?