Pu-erh tea is a very unique tea that does not belong to any particular tea family, but is in a class of its own. Pu-erh tea is produced in the city of Pu'er in Yunnan Province, China, hence the name. It is a tea with sun-drying and autoclaving as the main process, and has a unique aged aroma and taste. During long-term storage, Pu-erh tea undergoes aging, giving it a richer and more unique taste. 
Pu'er tea is cake-shaped or brick-shaped, dark brown or black in color, and the tea soup is reddish-brown or dark red. It has a strong aroma, sometimes with some stale or woody notes, and a mellow, sweet aftertaste, and sometimes some bitterness. Due to its unique taste, Pu'er tea has been widely popular, not only in China, but also in the international market. 
The quality and value of Pu'er tea are closely related to factors such as its origin, production process, and storage time. High-quality Pu'er tea is produced in Pu'er City and surrounding areas in Yunnan, with fine production technology and long storage time, so it is high. Some lower-quality Pu-erh teas may be produced in other regions, and the production process and storage time are insufficient, so the taste and quality are relatively poor. 
Overall, Pu-erh tea is a very unique tea variety that does not belong to any particular tea line, but its unique taste and quality make it unique in the tea market. For those who love tea, tasting a cup of high-quality Pu-erh tea is a rare treat.