谁是卧底国学怎么说英语

"Who is the mole in Chinese studies?" is how you would ask "谁是卧底国学" in English. "Mole" refers to a person who secretly gathers information or acts as a spy within an organization. In this context, it could refer to a person who is pretending to study Chinese culture or language, but is secretly gathering information or acting as a spy for some other purpose. Is there anything else I can help with?