What does it mean to show Buddha and Bodhisattva? Those people may be buddhas and bodhisattvas?

The forms of expression can be magical powers, dreams, quotations, enlightenment and so on. For example, Guanyin Bodhisattva in Pumenpin said that she should also show herself in this way, and it is better to read more scriptures.

There are too many buddhas and bodhisattvas. For example, Master Yin Guang made a wish that the Bodhisattva was alive, and the founder of Tantric Buddhism was the Bodhisattva. There are endless speeches.