Wild Echo

The old intelligence - a network of supercritical water veins 15,000 meters deep in the earth's crust - has continued to send "heartbeat" signals to the surface for three hundred years, looking for a host that can carry its consciousness model. Chen is the only person who can receive the signal because of his pure genes and resistant constitution. Before his death, Jhin found a peripheral passage to the old intelligence, but failed to penetrate deeper.