on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]
交易
jiāo yìㄐㄧㄠ ㄧˋ
(business) transaction; business deal[cedict]
的
deㄉㄜ˙
díㄉㄧˊ
dìㄉㄧˋ
of; structural particle: used before a noun, linking it to preceding possessive or descriptive attributive[cedict]
really and truly[cedict]
aim; clear[cedict]
房产
fáng chǎnㄈㄤˊ ㄔㄢˇ
real estate; the property market (e.g. houses)[cedict]