Fill the pen with water (Following the illustration below).<br><br> Drawing on the white area of the doodle-mat.<br><br> The drawing will magically disappear in few minutes，kids can doodle again.<br><br> The foggy lettles and arabic numbers around the white area can guide kids how to write them.<br><br><br><p><strong><strong><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-1-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-2-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-7-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-8-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-9-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-10-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-11-original.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/56a046219da92451570649a5-12-original.jpg" noproxy></strong></strong></p>