The best science and engineering majors in Tsinghua are: environmental engineering, physical chemistry, analytical chemistry, precision instruments and machinery, optical engineering and so on. The best liberal arts majors in Tsinghua are philosophy, politics, foreign languages and literature, public administration, education, law and business administration. The first-level disciplines in Tsinghua University are national key majors: mathematics, physics, ideals, optical engineering, materials science and engineering, electrical engineering, electronic science and technology, and information and communication engineering. Tsinghua University's two national key disciplines are quantitative economics, analytical chemistry, environmental engineering and design art.