That guy knows what to do with the swimming health certificate. Yantai aspect
Go to the Centers for Disease Control and Prevention for physical examination. It's on the back street of Laishan, close to the city government, quite far away.
I forgot how much money I had with my ID card and a one-inch photo, but it was very little anyway.
Don't go if you have a cold or fever. When you go, just tell the person at the window to get a swimming health certificate. It will be finished soon.