投诉

The Chinese word 投诉 (tōusù) is a compound word consisting of two characters: 投 (tōu) and 诉 (sù). The character 投 (tōu) means "to throw" or "to cast," while the character 诉 (sù) means "to tell" or "to complain." Together, the two characters 投诉 (tōusù) literally mean "to throw a complaint" or "to cast a complaint." This compound word is used in Chinese to refer to the act of making a complaint or expressing dissatisfaction about something. It is often used in a formal context, such as when filing a complaint with a customer service department or a government agency.