C103 The Secret of the Ancient Battlefield

Bai Zhenyun was shocked: "Ancient Battlefield?"

Liu Lianyi explained, "Back then, that battlefield was known as the ancient battlefield, and this era is even older."

Bai Zhenyun asked: "Then why do we have to train young people with all our might, could it be that only young people can enter?"

Liu Lianyi nodded. "That's right, only those who have cultivated for five hundred years can enter