ask while knowing the answer/“是養(yǎng)齋嗎？你講什么？”徐鵬飛……～。(羅廣斌、楊益言《紅巖》157) Xu Pengfei feigned ignorance.“Is that Shen Yangzhai? What are you talking about?”
明知故問
ask while knowing the answer
明知故問mínɡ zhī ɡù wèn
明明知道，還故意去問。ask while knowing the answer, ask as if did not know, feign ignorance and ask questions