After spending some time in Taiwan, I found myself slurping tea and hot pot by default. I came to realize slurping has it's advantages – in particular, you don't burn your lips and tongue on hot liquids.
Although I've re-Westernized when it comes to not slurping food, I do still slurp tea. Apparently, I'm not alone in thinking it's the best way to drink it. From the LA Times:
To taste tea, you must slurp it loudly, because tea needs oxygen to release its flavor. "Can we make some noise?" Spillane urged those who were drinking too politely. "You need to spray your entire mouth and draw air in with the tea to get a proper taste."
Slurping also makes it possible to drink very hot liquid without burning the mouth, and tea is at its best when hot. As it cools, it loses flavor.