What is the relationship between the dust beads in the ancient city and the curse of Yang Ping?

In The Ghost Blows the Lamp, a strange curse was put on Yang Ping, which made Yang Ping's family live less than 30 years old. So what is this curse? Yang Ping's grandfather was a climber of the Tomb Raider School in China. Shandaoists are descendants of the Prophet who mastered the ghost cave in the ancient city, that is, descendants of the Ma tribe in Zaghla. The Ma tribe in Zaghla is a poor tribe cursed by the ghost cave and almost extinct.

The curse of Yang Ping is the curse of this ghost hole. Yang Ping, a descendant of the prophet Zagrama, lived in Zagrama Mountain earlier than the Ghost Cave Man. Because the snake corpse came to the world and restored the ghost hole, the people of the Prophet tribe found an abyss, so they wanted to know what was below, and made a phoenix gall through divination. And chicken gall should be the eyes of a snake corpse. Fengdan opens a different space. Strange snakes come, they also get infectious diseases in different spaces, and then migrate.

Dust beads are taken from bottomless ghost holes, which are the materialization of two opposite nothingness energies belonging to the ghost hole world in the real world, and can freely alternate the physical forms of the real world and the ghost hole world. It was first obtained by the ancestors of the Tibetan magic country from the ghost cave. They know the connection between ghost holes and dust beads. Ideologically, they think it is the eye of the snake god. After the demise of the magic kingdom, it flowed into the Central Plains, that is, the Yin and Shang Dynasties. Since then, it has spread in the central plains and is considered to be a fairy.