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A pair of siblings of the same age are in love. The elder sister is Ji A, the younger brother is black A; the elder sister is a professional referee, and the younger brother is still big on the upper body; the elder sister is gentle and tolerant, and the younger brother is like a wolf and a tiger; the elder sister is famous all over the world, and the younger brother is just drifting to the north; the elder sister was born in the summer, and the younger brother has a winter birthday...