http://track-chinapost.com/result_china.php?order_no=LY234751865CN shows No shipping record. your seller applied this tracking number from china post on May 6 but never actually ship anything to you. You are very likely to be scammed.

You should push seller to ship the goods immediately. Tell him if you can not track real shipment data in next 3 days, you will open dispute to aliexpress/amazon/ebay/paypal against fraud.