by nature, so it's almost impossible to keep used ones. As for vermilion made from animal blood, I've never even heard of it.” Gu Wentian shook his head, but then continued, “However, if you want to...sons."Chen Ping shook his head.Xu Changsheng frowned even deeper: “This is strange. How come we can't detect anything We can't figure out what kind of poison it is, and we have no way to antidote it....