A hairpin
Yi'er diao'er is a Chinese idiom. Its pinyin is y í ě rzhu ì Z ā n, which means that it is easy to drink but does not stick to one's appearance. It is the same as "Yi'er diao'er". It's from the palace of eternal life: a journey to the palace of eternal life.
The origin of Idioms
"Zhu Lun, crushing Fangdi, hanging hairpin and falling flowers set off each other."
Idiom usage
Used as an object or attribute; used in writing.
A hairpin
grow up from the filthy mud without being polluted - chū chén bù rǎn
be strictly honest under all circumstances - bù kuì wū lòu
the inexpensive gift by scholars - xiù cái rén qíng