The Advanced Refining feature for Civilization Equipment is now available!
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Once all four refining attributes of a Civilization Equipment reach Gold, Advanced Refining for this Civilization Equipment will be unlocked.
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Upon unlocking advanced refinement, an additional specific refining attribute is acquired. This specific attribute remains unaffected by other refining attributes.
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You can spend Gold and Refining Stones refining this specific attribute.

Ares and Achaemenidae Sets are now upgradable!
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You can view this in the Equipment Upgrade interface in the Forge in your City.
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By consuming Forge Master Certificates, you can upgrade the Ares Set to the Imperial Set and the Achaemenidae Set to the Parthian Set.
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The new material, Forge Master Certificate, can be obtained from the Gather Troops event and the Viking Challenge event.