Wanjie: Siheyuan and Jia Dongxu Trade Black Hearts

This book is also called, "The system is flooded, quickly travel through and kill the bound ones" After the protagonist and his wife divorced, he accidentally obtained the trading system of all worlds, and his life has been booming since then! The first world, the Siheyuan world, trades the mysterious black heart with Jia Dongxu. In the second world, trade with immortal cultivators to obtain immortal cultivation techniques. The third world trades with Zhu Yuanzhang to achieve freedom of wealth. The protagonist who has gained a certain level of strength begins to enter the world to look for system binders and hunt them down, because this is his mission. No matter who you are, as long as there is a system, one word, kill!