The Chinese Academy of Sciences (CAS) is the national research institution of the People's Republic of China. Established in 1949, it focuses on advancing scientific knowledge and technology across various fields, including natural sciences, engineering, and social sciences. CAS plays a crucial role in China's scientific development and innovation. CAS comprises multiple research institutes, universities, and laboratories, making it one of the largest scientific organizations in the world. It collaborates with international institutions and promotes scientific research, education, and public outreach, contributing significantly to global scientific advancements and addressing pressing societal challenges.