This is the result of the physical history reform of the new college entrance examination, which is 1+2 in the 3+1of the college entrance examination reform.

Among them, "3" is a compulsory subject, that is, Chinese, mathematics and foreign languages, "1" is an optional subject, history or physics, and "2" is an optional subject, chemistry, biology, politics and geography.

Teachers usually call physics a science and history a liberal arts, even if you choose physics, geography, politics (you are also a science) or history, chemistry and biology (you are also a liberal arts).