孪生
luán shēng · HSK 7
twin
👯 孪生 = 孪 (twin) + 生 (born); two born from one birth
生 shēng is the same born/birth character in 生日 (birthday) and 学生 (student, one being raised). Pair it with 孪 and you get siblings born in the same delivery — twins.
生 — sprout 屮 above earth 土
Originally a pictograph showing a young plant sprouting from the ground, with 屮 (a sprout) above 土 (earth). The core meaning is 'to be born, to grow, to live,' which extends to 'raw, unripe, unfamiliar.' The modern form has simplified the sprout shape but preserves the image of new growth emerging from soil.