n't too far from the Northern Border Duke's Mansion. It took An Xuetang and her five companions, Fu Shou Kangning, less than a quarter of an hour to arrive by horse.At this moment, Yun Si and Yun Liu...ere familiar with it. It was a poison concocted by An Xuetang. Once inhaled, this powdered poison would be fatal to anyone unless they possessed extraordinary martial arts skills.This kind of medicine...