单双公式规律简介：It took more than half a day for Qin Fen to reach level four and enter the middle stage of the black iron level. Although he was still at the bottom of the academy, such an upgrade speed was beyond the reach of countless people.
It took more than half a day for Qin Fen to reach level four and enter the middle stage of the black iron level. Although he was still at the bottom of the academy, such an upgrade speed was beyond the reach of countless people.
