Granny Liu visits the Grand View gardens (a classic episode from the novel Dream of the Red Chamber)

《红楼梦》中刘姥姥进大观园的情节非常精彩。

to be overwhelmed or bedazzled by new experiences and luxurious surroundings, especially as a person of simple background

他第一次来到这个繁华的大都市，感觉就像刘姥姥进大观园一样。