You can use draw coupon or diamonds to play the lucky draw. One draw coupon or 200 diamonds for each time. The biggest prize is the 30% diamond of Lucky Pool, which maxes out at 100,000 diamonds reward. 

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There is an experience bar at the right side of the draw disk. After playing for 15 times, you’ll get a chance to draw the Grand Prize from the high-level turntable Lucky draw.