The Bai people in Dali, Yunnan have the custom of welcoming guests with "three courses of tea". What are these three courses of tea and what philosophy of life do they symbolize?

The first tea is called "the bitter tea", which means the philosophy of life: "To build a career, you must first endure hardship." When making, boil the water first. The tea maker then places a small sand pot on a slow fire to bake. After the jar is heated, put an appropriate amount of tea leaves into the jar, and keep rotating the jar so that the tea leaves are evenly heated. When the tea leaves in the jar make a "pop" sound, turn yellow, and smell caramel, Immediately add boiling water. After a short while, the host pours the boiling tea into the tea cup, then holds the cup with both hands and offers it to the guests. Because this tea is roasted and boiled, it looks like amber, smells burnt, and tastes bitter after drinking, so it is called bitter tea. Usually only half a cup is consumed in one drink.

The second tea is called "sweet tea". After the guest has finished the first tea, the host once again uses a small sand pot to store, roast, and boil tea. At the same time, he must also put a little brown sugar, milk fan, cinnamon, etc. into the tea cup until the tea soup is cooked. Pour until eight minutes full. The third tea is called "aftertaste tea". Although the method of making tea is the same, the only difference is that the raw materials in the tea cup have been replaced by an appropriate amount of honey, a little fried rice popcorn, a few peppercorns, and a pinch of walnut kernels. The tea capacity is usually six to seven minutes full. When drinking the third tea, you usually shake the tea cup to mix the tea soup and condiments evenly; make a "whooshing" sound in your mouth and drink it while it's hot. This cup of tea tastes sweet, sour, bitter and spicy, with all the flavors and endless aftertaste. It warns people to have more "aftertaste" in everything and remember the philosophy of "bitter first, then sweet".