Mystery Solved on the Purpose of Longyou Caves

Longyou Caves are a mysterious magnificent underground wonder has baffled historians since its' discovery in 1992. It is believed these caves are at least 2,000 years old if not older. So far no one can explain why and how these unusual caves were built. I have an exciting new theory, which I present here for the 1st time. It perfectly answers important questions. My answer has been hidden in plain sight!

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