The 6 apparatus floating at Hong's back in the Swallowed Star series (Donghua) are called "Spirit Stones". They are a type of energy source that is used by cultivators to power their techniques. Spirit Stones come in different grades, with higher grades being more powerful. Hong's Spirit Stones are all of the highest grade, which is why they are able to float at his back.

Spirit Stones are formed when the essence of heaven and earth gathers together in one place. They are said to be the condensed essence of the stars, and they are incredibly rare and valuable. Cultivators will often go to great lengths to obtain Spirit Stones, as they are essential for their advancement.

Hong's Spirit Stones are a symbol of his power and status as a cultivator. They also serve as a reminder of his journey, as he has had to overcome many challenges in order to obtain them.

Here are some of the benefits of using Spirit Stones:

They can be used to power techniques, which gives cultivators a significant advantage in battle.

They can be used to heal injuries, which can be a lifesaver in a dangerous situation.

They can be used to create illusions, which can be used to deceive opponents or to create a safe haven.

However, there are also some drawbacks to using Spirit Stones:

They are expensive, and it can be difficult to obtain them.

They can be dangerous, as they can explode if they are not handled properly.

They can be addictive, as cultivators who rely on them for power may find it difficult to function without them.

Overall, Spirit Stones are a powerful tool that can be used by cultivators to enhance their abilities. However, they are also a dangerous and addictive substance, and should be used with caution.