The Xi Hu Long Jing tea (West Lake Dragon Well) is one of the most sought after, renowened teas. Being the Chinese number one tea it is also a subject to falsification. The majority of this tea in the market is fake, but there is a way of checking if you have purchased the real thing. Except for the notable high price the real Xi Hu Long Jing should have an Anti-fake label. On the label there is a number when you scratch off the coating, which you enter on in the text box here http://www.fwcx.com (Anti-fake website of the Hangzhou Quality Control Department). Next you can use a free online translator to translate the results. You will either get a message that tells you that you have successfully purchased the real Long Jing or that the number has already been asked for.