Config storage on sharded cluster not config cluster

Hi everyone,

I am doing the labs for Chapter 3 and have created a sharded cluster with two sharded clusters and one config cluster. I have a question about the storage of the config database. My understanding is that the config database is stored on the config cluster, and other databases are on the two sharded clusters, i.e., m103-repl and m103-repl-2. However, when I check the sh.status, I found that the config database is stored on the m103-repl cluster.

Why the config database in on the m103-repl cluster, not the config server, please?

Here is the screen of the sh.status:
status

I noticed the same situation in the lecture videos. Did I miss something, please?

Thanks!