Something I've noticed with these challenges is that you get to one that offers you alot of points, but the work put into well exceeds what you are getting out of it. This mission requires you to spend gems (Premium Currency) in order to build four aqueducts. There are 3 ways to do this, spend money on gems, invite players to the game and saving your gems from the start of the game. I feel like the point of these quests should get the player attached to the game as they try and learn how to play it and complete the quests rather than getting them financially attached. That should be a decision someone wants to make on their own. Alot of these games get you signed up just to get you so invested in time to have you being required to buy premium things. Can you guys please make this not the case. Its happend on league of angels for me as well and shortly elvenar.