混為一談

To mix or mingle things together; to muddle along or drift through life; to pass for something one is not; to get along with people; thoughtless or reckless.

To do; to act; to make; to become; to be; to serve as; because of; for; by (passive voice marker).

The number one; single; a; as soon as; entire; whole; all; a "one" radical in Chinese characters; also used for clarity when spelling out numbers.

To speak or discuss; a conversation or speech; a surname.