Mysterious quest? help pls

weli found this quest at santuary and its rewards are pretty dope but i dunno what to do...someone could help me i 'd appreacite  it

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you have to do a Daily Quest called "Attica War" if you have it in chinease it has the same symbols as the blue text in the quest, is the one that says "Join War" instead of "Join a Team", you need to have a good score and rank to complete it, so avoid dying too much, is 24v24 so if someone pulls you its over...