C643 Alternative approaches

At the moment, Qing Xuan could be said to be wholeheartedly trying to rescue Yin Hongguang from the cold prison.

However, the old lady just looked at Qing Xuan and did not say anything. This kind of reaction, made Qing Xuan not know how to react.

After a long while, the old lady finally spoke out: "Qing Xuan, based on my calculations