In China, especially in the south, you will find many tea stores. The seller will invite you to drink and introduce all kinds of tea in his store, if you want, it is free. This picture is photoed in a tea store. The tea is already for the guest. If you go to China and want to buy some tea, you can ask the seller prepare some kinds for you before buy it. and then decide which one is better for you.
By the way, the teapot is also beautiful.