How to say [X] in Chinese

initial price (e.g. for the first kilometer)

buying

起价

qǐ jià

inner product

buying

内积

nèi jī

inner-spring mattress (loanword from US mattress brand "Simmons")

buying

席梦思

xí mèng sī

invoice

buying

发票

fā piào

It is hard to change one's essential nature (idiom). You can't change who you are.

buying

本性难移

běn xìng nán yí

jing'erhu, a two-stringed fiddle intermediate in size and pitch between the jinghu 京胡 and erhu 二胡, used to accompany Chinese opera

buying

京二胡

jīng èr hú

judicial auction

buying

法拍

fǎ pāi

kansei engineering (product design that aims to engender specific subjective responses in the consumer) (orthographic borrowing from Japanese 感性工学 "kansei kougaku")

buying

感性工学

gǎn xìng gōng xué

key money

buying

顶手费

dǐng shǒu fèi

labor cost

buying

人工费

rén gōng fèi

labor market

buying

劳务市场

láo wù shì chǎng

land auction

buying

土拍

tǔ pāi

land is extremely expensive (in that area) (idiom)

buying

寸土寸金

cùn tǔ cùn jīn

land price

buying

地价

dì jià

large size

buying

大码

dà mǎ

large sum of money

buying

大钱

dà qián

large sum of money

buying

重金

zhòng jīn

late Yuan and early Ming

buying

元末明初

yuán mò míng chū

legume-based product

buying

豆制品

dòu zhì pǐn

length and width

buying

长宽

cháng kuān

liberal with one's money

buying

手松

shǒu sōng

library card

buying

借书证

jiè shū zhèng

life-size

buying

等身

děng shēn

light (color)

buying

浅淡

qiǎn dàn