It turns out its a tradition of the village. The man who bury themselves on to the ground, are to look out for daughter to find a mate. It was traditional celebration in their village. And I saw the girls villagers were young and beautiful.
As I kept going down the hill. I arrived a house. And I saw this couple. The guy is clearly from the village, he has darker skin like the other villagers, and the girl has very pale skin. She seems like she is from town, and she just moved to this village to be with the guy.
This girl's sister is also in the house, and she is helping to decorate the house for their wedding day. In the village they like to use the colour white as a celebrating colour, but I could tell it's a different tradition from the girl side. In town, people used to use the colour red for celebration, and the sister has been saying, using white without any red is going to bring bad luck, or the couple will live poor even they get married, but she would do it anyway because her sister just want to marry this man.
At this point, the dream has become very un organised. I saw some kind of different tradition and ceremony about death. They put clay idol on the bed, and it looks like characters from South Park, the village would move them and transform them, I felt like I was watching a tv show.