Thunder City Demon-Catching Golden Seal, ranked ninety-first in the Dragon and Tiger Seal Golden Volume.
The so-called 'Thunder City' is, according to Daoist mythology, the dwelling place of the Thunder Division deities.
It is said that in the center of the Nine Heavens Thunder City, there stands an iron pillar symbolizing an unavoidable divine punishment, and all great demons must be chained to it, subjected to Celestial Extreme Thunder Punishment.
In Journey to the West, after Heart Monkey wreaked havoc in the Celestial Palace and was captured by Erlang True Monarch from Guanjiangkou, he was bound to the Thunder City iron pillar and endured the Celestial Thunder Punishment.
"Thunder City Demon-Catching Golden Seal..." Zhang Fan's heart grew hot.
