You can take medicine without English. Just explain to him in English. Of course, it is best to bring it in English.
Sometimes the border inspection will ask you what medicine you brought, and you will answer him, such as a headache. He stopped checking.
Many times, customs officers will carefully check foreigners and open their bags for inspection. If you find out what medicine you are carrying, and you can't explain it clearly, of course you have to confiscate it. With luck, for those drugs that have been declared, he may just let you pass the conveyor belt inspection.
Chinese medicine will definitely be confiscated (including plants).
Iodine is a flammable liquid. You can't carry it in your carry-on luggage on the plane, but you can check it in your luggage.
Wool coats can be put in the suitcase, so there is no need to declare them. If there is sheepskin in it, you must declare it.