Super Smuggler

Xiao Donglai accidentally obtained a mysterious jade piece. This jade piece not only possessed strange abilities, but could also be teleported back and forth to the distant ancient continent at will. In that place, warriors roamed freely and their martial arts were top-notch; but compared to Earth, the technological development there was almost zero. Well, my opportunity has come, let me be a smuggler who resells back and forth. Iodized salt, monosodium glutamate and simple paper, starting with these simplest things... What's over there? There are the most abundant raw materials here. Of course, the readily available martial arts secrets are essential, as well as essence, blood, and elixirs. As long as they can make you rich, you must not let them go...