Let A Butterfly Perch on

Release Time: 2015-04-02 18:25:33

Would you mind a butterfly perching on your powerbank? What a wonder of that!
 
It seems they are a family, altogether four of them.
One is green because it is full of energy. 
Another is A little bit tired, you can see it in Blue.
The third one only remains half energy, it is purple.
The last one is red, it needs refill its power at once. 
 
 
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