You may be asking about rubbing fish in Shanxi, which is named after rubbing fish into fish-like pasta by hand, and it is a common folk pasta in Shanxi. The raw materials used for rubbing fish are flour, buckwheat, wheat, sorghum, corn and miscellaneous grains. Its shape is oblong, thread-shaped, wide and flat in the middle and pointed at both ends, etc. Its cooking and eating methods include cooking, steaming, stewing, stewing, frying and frying, etc. It is a very popular kind of pasta.

The red spots you mentioned may be flour or seasoning. There are too many ways to rub fish, so you can eat whatever you want!

Because there are too many kinds and practices, I don't know what taste you like, so please search for rubbing fish. There are many practices on the Internet!