Time:	19:00, from April 13th - April 19th, 2016.
Rewards:	Defeated the monsters have the chance to drop Damage -15% Gem, a Lunar Jewel, and a Red Stone. Weeding out the demons following the monsters may drop the Violet Stone, the Yellow Stone, and Blue Badge Packs. Blue Badge Pack It contains 10 Blue Badges. You can trade the Blue Badges for different treasures.
Requirement:	Level 50 or above
Frequency:	Once per day
Location:	Learn about the monster's information in the Monster Habitat, then fight them in Cronus City or the Gobi Desert.
Key NPCs:	Sailor, the Blue Robe Trainer, Abandoned Land (576,665) Green, the Abandoned Land's Transit Envoy, Abandoned Land (89,299) Famir, the Queen's Envoy, Cronus City (304,402)

Walkthrough

1. Find Famir (304,402) in Cronus City, from April 13th - April 19th. She can help you enter the Abandoned Land.

2. Talk to Green (89,299) in the Abandoned Land. Enter the Monster Habitat with his help.

3. Learn more information about the monsters, such as the monster type, attack site, and escape time.

4. Head to the places where the monsters appear, then take them down, between April 13th - April 19th.

5. If you collect enough Blue Badges, don't forget to trade them for different treasures from Katherine and Eleanor in Cronus City, before April 27th.