在 + 东边
The locative noun 东边 (dōngbiān) means "east side" or "to the east." It is used to indicate a direction or location relative to a reference point. Like other directional words in Chinese, it can follow 在 to form a location phrase, such as 在东边 meaning "on the east side."
超市就在我们小区的东边。
Chāoshì jiù zài wǒmen xiǎoqū de dōngbiān.
The supermarket is just to the east of our residential compound.
太阳从东边升起来了。
Tàiyáng cóng dōngbiān shēng qǐlái le.
The sun rose from the east.