zuì
我国是世界上人口最多的国家。
wǒguó shì shìjiè shàng rénkǒu zuìduō de guójiā
Our country is the most populous country in the world.
中华之最
zhōnghuá zhī zuì
The greatest of China / China's superlatives
世界之最。
shìjiè zhī zuì
The greatest in the world / World's superlatives