Wasteland Hunter

Gu Chenguang, citizen number 9527, before his father disappeared, he left him a mysterious book wrapped in cowhide, which recorded some introductions to various species, weapon manufacturing, fighting skills, and a magical breathing technique, which indeed brought him great benefit. But what is very puzzling is that the last page of the velvet book has been torn out, leaving only a warning: Never look for the secret hidden in the last page!