C239 An Invisible Resistance

Lin Tianyu asked in confusion, "Why is it abnormal?"

Lu Feixue frowned and said, "According to the old legend, the opening of Black Sabre Secret Realm only happens once every thousand years. But the opening of ___ the last time was only five hundred years away from the previous opening. This time, it was only twenty years away. Then it opened. Isn't this abnormal? "

When Lin Tianyu heard this