Xu Yan knew he only had one chance to strike and that he couldn't make any noise; otherwise, he would certainly alarm the Xuezhi inside that stone house.
This row of stone houses was already the innermost row, very close to the one the Xuezhi lived in. With the formidable strength of the Xuezhi, any slight noise would surely be detected.
Because this Blood Disciple was the leader of the Six Blood Disciples, with a high status, Xu Yan couldn't resort to the same underhanded tactics used against the other Blood Disciples, such as an unguarded backstab.
He could only get as close as possible and use conversation to attract the other's attention, then strike suddenly when the other was off guard, especially ensuring there was no chance for the other to sound the alarm.
