Tā zhōngyú zhǎodào le shīsàn duōnián de qīn gǔxuè.
She finally found the flesh-and-blood relative she had been separated from for years.
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骨血 is more literary and emotional than 后代 (descendants). Often pairs with 亲 (dear) as 亲骨血 - used in family dramas and reunions to emphasize blood ties and lineage.
