Ironic, I got the exact same task and wasn't sure what to do. I hope you don't mind me tagging to see the answer later :D (Sorry I couldn't be of help)
1. How often do they drop charms? 2. How much exp do they give per hour with ice burst? (I can pot up to 70 :) ) 3. How much exp would they 1.1k Chins give me? 4. How does it get? Thanks in advance.