Schengen, village in Luxemburg, location of the 1985 signing of the agreement to create the Schengen area 申根區|申根区[Shen1 gen1 qu1]
追根究底儿
zhuī gēn jiū dǐ r
erhua variant of 追根究底[zhui1 gen1 jiu1 di3]
郑码
Zhèng mǎ
Zheng coding / original Chinese character coding based on component shapes, created by Zheng Yili 鄭易里|郑易里[Zheng4 Yi4 li3], underlying most stroke-based Chinese input methods / also called common coding 字根通用碼|字根通用码[zi4 gen1 tong1 yong4 ma3]
寻根溯源
xún gēn sù yuán
see 追根溯源[zhui1 gen1 su4 yuan2]
蟠根错节
pán gēn cuò jié
variant of 盤根錯節|盘根错节[pan2 gen1 cuo4 jie2]
拔根汗毛比腰粗
bá gēn hàn máo bǐ yāo cū
lit. a hair plucked from (person A) would be thicker than (person B)'s waist (idiom) / fig. A is far richer (or more powerful) than B / (used in a pattern such as A拔根汗毛比B的腰粗[A ba2 gen1 han4 mao2 bi3 B de5 yao1 cu1])