A different approach
The Li and Liu clans controlled the local salt and cotton trades, respectively. In terms of status, the Li clan, who controlled the salt trade, was more influential. Ren Xiaosu could also tell that Liu Ting's father was actually more like the subordinate among the two and that these two families should be closely related.
These two clans had suddenly approached Melgor to suggest moving up their departure date to Ghent City. The change of plans was probably not just motivated by their haste to train a sorcerer in the clan.
After Li Chengguo and Liu Ting went back home, they must have talked to their clans about the ambush they encountered on the way back, as well as the personal feud between Melgor and the Tudor family.