Formal:
* 淡茶 (dàn chá): This is the most literal translation, meaning "light/pale tea." It emphasizes the color of the tea being light, which indicates it's weak.
* 清淡的茶 (qīng dàn de chá): This means "light and bland tea," emphasizing both the color and taste.
Informal:
* 淡 (dàn): This is a shortened version of "淡茶," often used casually among friends or family.
* 寡淡的茶 (guǎ dàn de chá): This means "thin/watery tea," emphasizing the lack of flavor.
Other options:
* 泡淡了 (pào dàn le): This means "brewed too weak," suggesting that the tea was weak due to the brewing process.
* 茶太淡 (chá tài dàn): This means "the tea is too weak," emphasizing the degree of weakness.
Ultimately, the best way to say "weak tea" in Chinese depends on the specific situation and the desired level of formality.