Wudi stared the Steel Tiger down as he waited for it to make its move. Everything was rated the same, either by tier or grade. Demon beasts were commonly denoted by cultivators in tiers. A tier two demon beast like the Steel Tiger was equivalent to a Martial Dao Realm Cultivator. Nothing was ever graded or considered a tier until it reached the Martial Insight Realm. Meaning anything at Tier or grade one was considered equal to Martial Insight Realm Cultivators. The Martial Realm was still considered mortal and wasn't of enough strength, and all items related to helping Martial Realm Cultivators were considered mortal items, like mortal herbs or mortal weapons.