『乾坤圏（けんこんけん）』は『混天綾（こんてんりょう）』と並ぶ、金光洞の名高き宝貝（パオペエ）。哪吒誕生の祝いの品として、太乙真人より贈り与えられた仙界の武器である。以来、哪吒は肌身離さずこれを身につける。

伸縮自在、普段は一対の腕輪として両腕に装着され、身から離せば鋭い刃を持つ円環状の得物となる。哪吒はこれを半自律ドローンのように使いこなす。
宙に投げ上げ「疾！（チー）」と叫べばたちまち敵に襲いかかり、「停！（ティン）」と唱えれば宙にとどまり、「来！（ライ）」と唱えれば手元に帰る。

―――ただ一度、哪吒はこの乾坤圏を持たぬ時があった。
石磯娘々との戦いで奪われ、その後、取り返した太乙真人が預かった。
人界の父母を救うため、なにより自分の犯した罪をつぐなうために自害し、あらたに生まれ変わるまでの間、しばし手放した。
哪吒にとってこの宝貝の不在は、屈辱と自責の記憶に結びついている。それゆえ哪吒は、絶対の信頼を置ける者にしか乾坤圏を託すことはしない。

その乾坤圏の片身を預けるほどの者がいるのなら、それは、相手を我が身同然に想う親身の情であり、そして何があってもまたよみがえり、必ずそばに帰ってくると誓う、その証である。

The Universe Rings, like the Red Armillary Sash, are one of the famed Baobei of Jinguangdong. It was a Taoist weapon that was presented by Taiyi Zhenren to celebrate Nezha's birth. Since then, Nezha always carried it with her.

The weapon can expand and contract at will. They are usually worn around the wrist as a pair of bracelets, but they quickly turn into a pair of circular blades the moment they leave the body. Nezha uses this weapon like a semi-autonomous drone.
When she throws them up in the air and shouts "Jí (speed)!" the Rings shoot towards the enemy. When she shouts "Tíng (stay)!" they stop in mid-air, and they return to her hand when she shouts "Lái (come)!"

But there was a time when Nezha didn't carry the Universe Rings.
They were taken from her in the battle against Lady Rock, and later retrieved by Taiyi Zhenren, who kept them temporarily.
From the time of Nezha's suicide to save her human parents and atone for her sins until her rebirth, they were out of her possession.
To Nezha, this Baobei is closely associated with humiliating and regrettable memories. Therefore, she would never entrust the Universe Rings to another unless she trusted them absolutely.

If there was someone whom Nezha trusted enough to give one of the Rings, it would mean that she considered that person so close as to be a part of herself. And it would also represent a vow that she will always resurrect and come back to the holder, no matter what.