What is Lingbi's English?

A pendulum is actually a pendulum, which means hanging, that is, a rope with heavy objects falling on it. So, you can't put any words in front of it. If you add spirit, it will be a bit redundant.

Pendulum is a very popular divination tool, as long as there are wires and heavy objects, you can divine. Many people think that the pendulum has a "spirit", and the result of divination is that the "spirit" tells the story through the pendulum after accepting the question ... so the word "spirit" is added.