How to say "Yes" in Chinese

是的 (shì de) is a fixed expression: 是 (shì) means "to be" and 的 (de) is a particle that nominalizes, together forming a confirmation meaning "it is so".

Use 是的 to affirm a statement or answer "yes" to a question. It is polite and can be used in both formal and informal settings. Avoid using it to agree with a negative statement; instead, use 对 (duì) or 没错 (méi cuò) for that.