@JWChibi: Showing the items like those jewelry beads didn't have any problem as it was just a kind of forming connections between Royalties. The problem was MC revealing something which wasn't meant to be shown or planned to be shown yet.
@insert_name: The original plan of the Queen was to give no duties to MC, but without meaning to she ends up giving him more work to him (because of lack of Royal family members), because
While they don't want to share important Science-related stuff with the other Kingdom's, they do want to know the price of some safe stuffs which MC brought which could turn into important funding for the Royal Family exclusively (the tax collected is for the Kingdom not the Royal family, so they need their own source of income for personal usage).
MC got blamed here was because he said something which wasn't meant to be said, aka., information relating to Science.
@insert_name: The original plan of the Queen was to give no duties to MC, but without meaning to she ends up giving him more work to him (because of lack of Royal family members), because
unconsciously she ends up treating MC as a easy and convenient tool to use who would do everything she asks for without complaining. This point is brought up later in the series as well (which is why i put it in "spoiler")
While they don't want to share important Science-related stuff with the other Kingdom's, they do want to know the price of some safe stuffs which MC brought which could turn into important funding for the Royal Family exclusively (the tax collected is for the Kingdom not the Royal family, so they need their own source of income for personal usage).
MC got blamed here was because he said something which wasn't meant to be said, aka., information relating to Science.