After getting rich overnight and no longer worrying about money, Fang Yu has a loftier ideal! On the Wandering Earth, he keeps exchanging food for technology, in the world of bright swords, he keeps exchanging food and weapons for resources, and in the real world, he keeps on exchanging Development. In the end, Fang Yu has to say that exchanging food for technology and rare resources is really delicious! Cute new author, welcome to come and correct me......