What does the "deity" in Tibetan Secret mean?

This bodhisattva is a bodhisattva who constantly thinks, studies, prays and meditates.

The deity is a unique concept of tantric Buddhism.

Each of the four Tantric books has its own spiritual universe model, that is, the "Tancheng" system, which consists of a secret god and some family gods. The main god of the altar city is what people call the deity. Every meditator should take his own god as the object of meditation.

The more famous kind gods are Manjusri Bodhisattva, Guanyin Bodhisattva, Tara, Infinite Life Buddha and so on. The more famous angry faces are King Kong, King Kong, King Kong at Matou (or King Ming at Matou) and King Kong Lapani (also known as Chana Dorje). There are Mi King Kong, Le Sheng King Kong, Hewajira, Shi Lun King Kong and Jaime King Kong.