Zhè dào tí nán bù dǎo tā, qīngqīngsōngsōng jiù jiě chūlái le.
This problem couldn't stump him; he solved it effortlessly.
Tips
grammar
轻轻松松 is the reduplicated form of 轻松 (qīngsōng, easy/relaxed). AABB reduplication (轻轻松松) intensifies the casual, effortless quality. It typically appears before 地 or before a verb to describe the manner of an action.
