Hello Taka I'm Japanese and I was taught to use the phrases the way like this. If you have a chance to meet a person for the first time, you would say "(Hello! (It is ) nice to meet you in person" to begin your talk with them.
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By that I mean it's hard to learn that what sounds to a learner like it might be a terrible error is often less than a triviality to a native speaker. Conversely, what sounds to a learner like a minor slip may sound extremely unnatural to a native speaker.