Yeah no, this "plan" was stupid. If the chancellor dude (logically) just said "wtf am I going to do with a childish dress and some jewelry, do I look like a pawnbroker? gtfo" they would've been sunk.
It's their mistake to allow Lord Leng to listen in to the post-negotiation strategy explanation.
I have the feeling that Leng's ego is so large that he would willingly ruin the negotiations
just to make Eirth and Lysia look like bad incompetent children. Leng's ego apparently
hates being "shown up" by children.
I don't mind the MC not being the strongest or smartest in their group, but this MC can basically do nothing. He's the worst fighter in his group and the dumbest, and it's kinda starting to annoy me.