碰见 (pèng jiàn): เพื่อวิ่งเข้าไปเพื่อพบ

Yesterday I ran into my elementary school homeroom teacher at the supermarket, and we chatted for half an hour.

What a coincidence! While traveling in Paris, I ran into an old classmate who happened to be on vacation too.

If you run into a lost child on the street, you should help him find a police officer.

I ran into Auntie Wang at the hospital yesterday; she looked much more energetic than last time.