Eternal Immortal Emperor

When Wu Mo was suffering from cancer, he still wanted to die... He accidentally fell into the Demon-free Continent and was rescued by the old man Hong Yun, officially embarking on the path of cultivating immortality. Cancer also has another name - the eternal curse. Wu Mo got a blessing in disguise, the immortal curse stayed with him, and he eventually transformed into an eternal body... Is this world without demons really free of demons? Are demons ruthless or humans bloodthirsty?