Heard it through the grapevine😆😥😮😡

In the Korean comments

The reactions identify Rora’s acting as the detail to watch. One top comment reads, in translation, “Rora should act as well. She’s so good,” while another says, “As expected of a child actor.”

What the words mean

전해 들었어 (jeonhae deureosseo) literally suggests something was conveyed to the speaker; here it means “I heard it from someone” or “I heard through the grapevine,” explicitly marking the information as secondhand. It is casual speech.