The developers of Honkai: Star Rail have announced the Mysterious Hypogeum event, where players will be able to receive not only rewards in the form of Star Jade and character enhancement materials, but also one of four four-star characters to choose from.
The Mysterious Hypogeum event will take place from January 22 to February 24, 2025, and will challenge Explorers to explore the ruins of an ancient city. Players will need a Mastery Level of 21 or higher to participate, and will be able to obtain a choice of Guinaifen, Hanyu, Tingyun, or Hook as temporary rewards.