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    Everyday when you online, you can see heroes wandering in your city, some of them have a small dialogue box on the head that can start a conversation with them, and finish it you may get resources&speedup item and trust of heroes that can unlock their story, voice and exclusive emoji.  But there are some wrong choices hiding in the dialogue, if you choose them you will lose the rewards. Here's a small trick to avoid them.

    Once you choose the wrong talk in the conversation, it will display "XXX feels very dispointed" on your screen, immediately press Back button or close the game will cannel the conversation, and you can start it then choose the right one and get all rewards, of course, it will display "XXX feels ver happy" if you choose the right talk.