铸
=
寿
+
钅
:
Julian Giant Squid (zhu) is melting longevity peach buns (寿) to use them to cast (铸) a golden harpoon (钅) in the space station's bathroom (Ø4).
copper (chemistry) / see also 紅銅|红铜[hong2 tong2] / CL:塊|块[kuai4]
铜
=
同
+
钅
:
Tommy Turtle (tu) runs a copper (铜) mine in the engine's kitchen ((e)ng2). He managed to force two twins (同) to work for him and mine the copper using golden harpoons (钅).