I think green tea is quite good. I like its taste better. It's delicious. I drink when I'm angry. It tastes bitter. The effect of clearing away heat and toxic materials is not bad, but it still varies from person to person. I don't know what will happen to you after drinking it.
Qingqing tea of Oriental Flower Health Tea Series is the most obvious health tea I have ever bought. Trust me, it's worth buying! If there is bitterness, it depends on what causes it. If you are angry, this will help.