My confusion around Jung so min and go young jung

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To this day I thought they were the same person, that is why I thought what happened to go young Jung's eyebrows on can this love be translated lmao. I thought it was go young jung on neighbors next door as well.

Also I just completed the alchemy of soul s1 thinking it was go young jung , was surprised to see Jung so min's name on FL. How do both of them look so similar??

When, someone on reddit said Go young jung needs to improve her acting, I was like she acts fine.

I've watched so many series with them and now, I'm totally confused about who is who.

Am I the only one that's confused??