Vajra Cincture(金刚琢):

This is a magical instrument of Taishang Laojun. It appears as a stark white ring, also known as the Vajra Ring or Vajra Snare.

It can transform and is impervious to both water and fire.

It has the power to strike all things, capture various magical treasures and weapons, and has limitless uses.

Forged from refined steel and enchanted with alchemical mercury, it possesses a spirit of its own.

Taishang Laojun once used it to defend himself at Hangu Pass.

He also used this treasure to knock down Sun Wukong, aiding Erlang Shen in capturing him.