make an ambiguous statement
Hesitation, a Chinese idiom, is pronounced "zh ī zh ī w ú w ú", which refers to the concealment, hesitation and evasion of speech. It comes from the fifth chapter of biography of heroes and heroines by Wen Kang of Qing Dynasty.
The origin of Idioms
The fifth chapter of Wenkang's biography of heroes and heroines in Qing Dynasty: "since I'm waiting for such a hard time to ask, you naturally should talk about it. How come after asking for a long time, you just falter and haw?"
Idiom usage
The instructor felt that Huang Jinbao was a little abnormal. His eyes flashed with the light, as if in tears. He asked him and refused to tell him. Melting pot by Yang Shuo
make an ambiguous statement
there is always a fair public opinion - zì yǒu gōng lùn