About Bone Hell

No, it's inefficient. I mean X-G has 64% drop rate with every 15 AP, so it's a lot better if you're desperate for bones. If that's what you're only asking.

https://docs.google.com/spreadsheets/d/1_SlTjrVRTgHgfS7sRqx4CeJMqlz687HdSlYqiW-JvQA/view#gid=1639355282

X-G is still the best place for bond doping. Most event do have some place for farming, but I recommend farm medium or high value materials, like phoenix feather or heart of foreign god in this event.