Magic rubber band powered Luban bird flying bird I: One of the common problems with birds is not going up, fly out of the grease and land directly, or head directly downward, there are several factors in the problem: 1: The front wings are uneven. Insufficient fan air, this is one of the main reasons why many birds are not flying well, 2: The unreasonable mishap of the wings leads to the unbalanced flight of birds in the air. 3: And the most important factor, the problem of unreasonable main frameworks for products is the quality of products, the mosquitoes cannot fly. Ii, stray birds fly to one side, that's because the balance on both sides is not good enough, because these products are made by hand only, there are inevitably some minor errors in the sticking process, These also lead to a poor state of flight, there's a weight component in the mishap., just buckle it on the side of the millet billowing, the problem was solved. Iii: If the flight is in an unsatisfactory state, observe the median line of the tail to see if the deviation is too large, too much deviation can also lead to poor flight or a slant. Reduction in the number of people, fold the other side of the slope with force, but be careful not to break the strength