| People | |
| Hwang Da-Yeon & Hwang Seo-Yeon | |
| Hwang Da-yeon and Hwang Seo-yeon are sisters. | |
| They can speak four languages: | |
| English, Chinese, Spanish, and Korean. | |
| They have ordinary parents and average intelligence. | |
| Moreover, they never went abroad and did not study | |
| any languages at private institutes. | |
| Every morning and evening, their mother lets them | |
| watch cartoons they like in foreign languages. | |
| The Hwang sisters play in foreign languages. | |
| For example, when Da-yeon speaks in English, | |
| Seo-yeon answers in Chinese. |
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