找上門

To look for, seek, or try to find; to visit or call on someone; to find or discover; to give change or return money.

Indicates direction or position, opposite of down; the surface or top of something; to go up; to attend class; previous; superior; to send up.

Door; gate; entrance; opening; family; lineage; school of thought; sect; key point; method; classifier for courses or fields of study.