Young dragon and young Phoenix
Longchufengzhong, a Chinese idiom, Pinyin is l ó ngch ú f è ngzh ǒ ng, meaning descendants of the emperor. It comes from three lanes of Yuyang by Xu Wei of Ming Dynasty.
Idiom usage
As subject, object, attribute; used in figurative sentences
The origin of Idioms
Xu Wei of Ming Dynasty wrote "three lanes of Yuyang": "what's more, those two are not flowers on other trees. They all grew up in the palace with their own flesh and blood surnamed Liu, but how could they make a jar of fish and shrimps out of the seeds of young dragon and Phoenix."
Idiom explanation
Of the descendants of an emperor.
Young dragon and young Phoenix
alternate leniency with severity - kuān měng xiāng jì