Update Scope: All Servers 
Version: V2.21.0
Update time: 2017/04/20 

New Features:

1.Furnace
2.Equipment Awaken
3.Advanced Runestones and Ultimate Runestones with 4 elements

Optimizations: 

1. Challenger Road: new stage added
2. Dungeon Sweeper: Team leader can ban Assist mode from joining
3. Gauntlet: Players can now enter the Gauntlet map in 30 minutes before the event starts
4. Changes to the Earth Runestone skill
Absolute Defense: Increase HP by 10%; if HP falls below 35%, gain a shield for 35% of max HP, and gain 15% ATK and HP steal for 3 rounds; this effect can only trigger once per battle.
Rock Guard: Basic attacks are guaranteed to hit; basic attacks will reduce target's Dodge by 30% for 2 rounds.
5. Recycle panels were rearranged.

Bug Fixes:
1. Team Arena: Fixed a bug where description was wrongly shown when mouse pointer was moved to Battle Pet.
2. Legion: Fixed a bug where players cannot receive invitation messages from friends.
3. Palace Dungeon: Fixed a bug where event items were also counted as relic shards.
4. Chat Group: Fixed a bug where the input text were cleared once you received new messages from others.