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Because not everyone has tested their DNA and left their DNA data in the DNA Database, "Dream" DNA testing may not always be able to find Wen Rou's biological parents. However, because Wen Rou has a very distinct Asian appearance, "Dream" excluded Western Caucasians, African Blacks, and other ethnicities with evident features from the DNA Database and miraculously found a couple whose DNA matched Wen Rou's exactly within the vast database.

Based on the current DNA testing data, "Dream" has been able to confirm with certainty that this couple is Wen Rou's biological parents.

After finding the information about this couple, "Dream" began to collect other information about them in reverse. Despite the incomplete information from that era, "Dream"'s capability to collect information was so powerful that it still managed to piece together most of the couple's details through minor connections and corroboration from other people.