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Collector: Twin Stein Sets of Brewfather Quan Tou Kuo
Restore 20 Twin Stein Sets of Brewfather Quan Tou Kuo.
Collector: Twin Stein Sets of Brewfather Quan Tou Kuo requires you to restore the 
Twin Stein Set of Brewfather Quan Tou Kuo a total of 20 times using Pandaren Archaeology.
Farm Pandaren Digsites
Gather Pandaren Archaeology Fragments by excavating Pandaren digsites in Pandaria. Each restoration of the Twin Stein Set of Brewfather Quan Tou Kuo costs 50 Pandaren Archaeology Fragments, and you must restore it 20 times to complete the achievement.
Use Keystones to Speed Progress
Apply the 
Pandaren Pottery Shard keystone when solving the Twin Stein Set of Brewfather Quan Tou Kuo to gain a +20 fragment bonus per keystone used, reducing the fragments you need to gather manually.
Prioritize Pandaren Digsites Only
To avoid wasting progress on other artifact types, fly exclusively to Pandaren digsites; if only Mogu digsites remain available, use the digsite randomizer item to cycle back to Pandaren digsites. Expect approximately 270 total Pandaren projects completed across all Pandaren artifacts by the time all 20 restorations are done.
Tips
Focusing solely on Pandaren digsites while using the randomizer item to skip non-Pandaren digsites is the most direct way to accumulate Pandaren Archaeology Fragments for this achievement.