If it's just for brewing Pu-erh tea, what is the minimum number of tea utensils needed?

From my experience, five types are enough: a gaiwan, a tea strainer, a kettle, a fairness cup, and tasting cups.

Gaiwan: This is the most convenient and versatile tea brewer, just like a Chinese wok for cooking; one can handle all sorts of different situations.

Tea strainer: Used to filter out tea debris. Choose one with good filtering效果.

Kettle: Actually, besides boiling water, it also plays the role of pouring water. Choose one that is comfortable to hold and has good controllability over water flow.

Fairness cup: This is used to hold the brewed tea liquor.

Tasting cups: Used for drinking tea. White porcelain is recommended as it is very versatile.

Related links: Golden Flower Fu Brick Tea, Golden Pearl Pu-erh