Is the explorer's purple hanging limited?

In the game "The Fifth Personality". The explorer's purple hanging astrologer is a limited pendant, and the online time is 2021July 19. Pendants can only be launched within a certain period of time and cannot be sold again after the event. This limitation makes pendants have certain rarity and collection value in the game. For players who like to collect and display special pendants, limited pendants are usually concerned and sought after.