The big layout is inverted triangle+circumscribed circle.

The inverted triangle is the inheritance of Central University.

The circumscribed circle represents perfection and introversion.

The wedge of the inverted triangle breaks the inner circle of the circumscribed ring, which means dissatisfaction with the destruction of the circle and the impact on the bondage.

The symbol means enterprising, but it doesn't go out of the circle, suggesting that the revolution has not been successful and comrades still need to work hard.