In Luo Zheng's opinion, the world's most secure systems are undoubtedly those of high-tech defenses, featuring various surveillance, sensors, detectors, fingerprint password locks, and explosion-proof doors. Even mosquitoes can't get in, let alone humans. Luo Zheng curiously looked at Cao Xi, who didn't answer but instead looked at Shi Qian.
Shi Qian knowingly smiled bitterly and said, "Boss, the high-tech defense systems you mentioned are indeed formidable, but they're only effective against ordinary people. For those who know what they're doing, these systems are just for show and useless. The most formidable defenses are ancient mechanisms, like the Nine Revolutions Exquisite Box, a specially crafted box that's impenetrable by knife or gun, can't be cut open, and the lock is invisible. To the uninitiated, it seems like a whole piece that can't be opened."
"Is there really something like that? How do you open it?" Ji Wu asked curiously.
