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Physics is dedicated to exploring the fundamental structure, composition, interactions, and laws of motion in nature. It is the most basic natural science. At the beginning of the 20th century, physics entered a glorious era. The establishment of the theory of relativity and quantum mechanics laid the two cornerstones of the entire modern physics. The Standard Model of particle physics, which is based on quantum mechanics and special relativity, has become an accurate theory for describing the properties of elementary particles in the microscopic world. Meanwhile, the general theory of relativity founded by Einstein has become the standard theory for describing the gravitational interactions of macroscopic objects on a large scale and even the evolution of the universe. However, the development of physics is far from over. Today, we may very well be on the verge of a new breakthrough in physics. What are dark matter and dark energy? What is the birth, evolution, and future of the universe? Does a grand unified theory exist? These are still fundamental questions that contemporary physics cannot answer satisfactorily. There are still deeper mysteries in the physical world waiting for humanity to explore. And the new technologies brought about by new breakthroughs in physics will surely once again greatly propel the development of human society. As one of the oldest sciences of humanity, astronomy explores the past, present, and future of the universe. It is the most important driving force for the development of basic sciences and focuses on the most forward-looking scientific development issues. Four hundred years ago, the ground-based optical astronomical telescopes in the era of Galileo and Newton signaled the dawn of the rapid development of modern astronomy, and astronomy has since established its own academic system. The three unsolved mysteries – the two darks and one black (dark matter, dark energy, and black holes) – are leading the way forward for modern astronomy. Unveiling these mysteries will ultimately answer the most fundamental philosophical questions: the origin of the universe and the origin of life. We sincerely invite outstanding talents at home and abroad to join the School of Physics and Astronomy, Sun Yat-sen University. We welcome excellent students from all over the country and the world to apply for admission to the School of Physics and Astronomy, Sun Yat-sen University. Let's explore the mysteries of the universe, jointly build the advantageous disciplines of physics, and create brilliance together with Sun Yat-sen University!