The postcard reads: Dear friend, This is Lu from China. Have you ever been to China? ( No not yet) This way I send you a coin, and handwriting of me. Hope you'll enjoy! Best Wishes! Mr Lu.
About the postcard: Wulingyuan, located in Zhangjiajie in western Hunan Provance.The area is known for its beautiful mountains & rivers.In 1992,Wulingyuan was included on the World Heritage List by UNESCO.
(PS I do not know what the hand writing he wrote means but when I find out I will post here)