From Kordu Village to Liege, ordinary people would have to walk for an afternoon. As a "hunter", Lumian definitely didn't need it, but in the eyes of Auror, he was not an extraordinary person.

After hesitating whether to take the opportunity to confess to his sister, and thinking that it is basically impossible to escape from Kordu Village, it is better to take the opportunity to visit Mrs. Pouaris's house and look for clues. Lumian said "hmm":

"OK."