Come and trade

　　Entering the simple and unsophisticated gateway build with green bricks,we catch sight of four large and glistening character--COME AND TRADE.When take a near view of the board,we find all the four large characters.concave and when take a distant view,we find them convex.It is really a masterpiece made by skilful craftsman.Crossing the cntrance hall,turning a corner and stepping along"Crane-neck-shaped long corridor",we can see 38 gold-lettered signboards hanging on the right wall.The signboards manifest the actions and effects of the key medicinal products in Hu Qing Yu Tang.The signboards are all made by ginkgo lumber,with black base and gold characters,they seems very solemn.