Pronunciation of "shch"

This letter, yi, has no counterpart in English.

Technically, you pronounce this as the "sh-ch" in "fresh cheese" with no break in between. Producing this sound in isolation is not very easy and not very useful. The only way to hear yi is to hear words that contain it, like:

If you can't pronounce this, just use a simple "sh" as in "sheep". It's not entirely accurate, but you will be understood.

 After the Meal