Passing Through BTTH World Proclaim My Rule

I accidentally traversed into the world where Wu Po is respected by war, and accidentally saw the privacy of Xiao Xun’er, who was super big, and suffered hostility. The protagonist Xiao Yan seems to have an invincible aura. How can people live! Fortunately, there is a cosmic trading system that can turn all useless things into useful ones. This can be done. See how brother disturbs the Douban sky!P.S: Multiple novels fanfic, BTTH, WQDK etc..