Is Business a Career? I Can Trade Everything!

[Academy Stream] + [Love Dog Food] + [Crossover Power] + [Funny] + [Single Female Protagonist Sweet Story] + [Trading Everything] All the people changed their jobs, and they were the most useless businessmen even in their real life professions. There was no hope of taking the martial arts exam? Sorry, I'm showing off my cards, I'm a cheater, I can trade with all things! Trading lifespan with the system, I directly obtained the S-level professional Summoner of All Worlds Is it difficult to deal with the beast tide? Trade with the little skeleton to get the animal attracting liquid, put it in the center, and cause chaos! Can't resist the attack? Trade with angels, obtain beast-controlling bricks, and build city walls to resist monsters! Does Summoner have limitations? It's okay, I can still trade in other professions! ... With constant trading, various specialties from other worlds, and combat profession trading platforms, the number of Xu Lan's professions is increasing. Until the seal was broken, countless human hostile forces appeared, and countless people came forward. Xu Lan said quietly: "It's okay, I can form an army by myself!"