Core of the Promethium-Radium Crystal.

Summary

Yu Xuan and Ling Hao discuss the mysterious crystal source, which enhances strength but depletes with excitement. They face a security guard at a research institute, but Ling Yue Qi intervenes, allowing them entry. Inside, Yue Qi studies the crystal, revealing its secrets. He warns them about dangerous equipment while explaining electric charges. Ling Hao recalls that the crystal activates during moments of danger. Yue Qi suggests he try to control the crystal's light intensity. Despite initial anxiety, they explore the lab's advanced instruments, captivated by the potential of the crystal source.

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