What exactly does Liu Jia Kanda mean?

Taoist names. Liu Ding, Liu Jia, together with the four meritorious deeds Cao, five brothers and sisters, twenty-eight nights, thirty-six heavenly generals and seventy-two demons, are all Taoist gods, and they are often summoned by Taoist priests in disasters to practice wind and thunder and subdue ghosts and gods. Six Ding are Ding Mao, Ding Si, Ding Wei, Ding You, Ding Hai, and Ding Chou. They are Yin gods. Liu Jia is Jia Zi, JOE, Shen Jia, Wu Jia, Chen Jia and Jia Yin. They are Yang gods. It is said that Liu Ding and Liu Jia are servants of the Emperor of Heaven, and they can "practice thunder and thunder to control ghosts and gods". Taoist priests can summon them with spells.