On the Guanyin Mountains, **Ouke Tea Technology Company** combines traditional tea cultivation with modern technological processing, aiming to provide consumers with the most “pure” tea. *Reduce tannin release to avoid bitterness and enhance sweetness: in cold water, the amino acids that give tea its sweet taste dissolve easily, whereas the bitterness from tannic acids and caffeine is less readily released.* *Lower caffeine content in the tea infusion to ease stomach wall strain. Cold-brewed tea can prevent stomach discomfort often caused by hot tea, and the reduced caffeine can also improve sleep quality affected by tea consumption.*