Li Du rejected Hans's suggestion.
If he had not fallen in love with Sophie, if he had not harvested so many gemstones from the national park, he might still have been somewhat interested in such a plan.
An auction tour was very bitter and tiring work. The word "tour" was just to make the suffering seem more pleasurable.
Treasure hunters did not participate in auction tours to have fun, they did so to earn money. They were required to travel to places far away from their homes and try their luck at finding treasures among a crowd of foreigners.
It was a very strenuous process. Firstly, due to a change in environment, there was a need to adapt to a new environment. Second, it was exhausting, both physically and mentally, to travel on the road. Last, they would encounter resistance from a lot of outlanders.