摘要
INTRODUCTION That which extends in all directions—above,below,and to the four cardinal points—is termed Yu;that which spans from antiquity to the present is termed Zhou.Collectively,Yuzhou(the universe)constitutes a natural“laboratory of four extremes”—combining ultra-macroscopic scales,ultra-microscopic scales,the most extreme physical conditions,and the deepest interdisciplinary integration—forming the stage for continuous exploration across astronomy,physics,biology,and beyond(see Figure 1 for an overview).
