Xiānglín de fángjiān lǐ chuán lái le yīnyuè shēng.
Music could be heard coming from the adjacent room.
Tips
usage
相邻 is often used in formal or technical contexts (geography, math, architecture). In everyday speech, 旁边的 (next to) or 隔壁的 (next door) are more common for describing physical proximity.
