Explanation
In South Korea, beckoning someone with a single finger is considered highly disrespectful and is associated with summoning a dog or a subordinate. The proper way to call someone is to use the whole hand, palm down, with a gentle waving motion of all fingers together.
Local Tip
Use your entire hand, palm facing downward, and wave all fingers together to beckon someone politely.
How it compares elsewhere
Beckoning with a finger is also rude; use the same whole-hand, palm-down gesture.
Beckoning with a finger is considered very rude and can be seen as a challenge or insult.
While common in casual settings, it can be seen as aggressive or condescending in formal or professional contexts.