If Taiwanese compatriots want to apply for their mainland-born "legitimate offspring" to come to Taiwan (take note: the children must be under 12 years of age, and illegitimate children have no chance!), the most important documents are notarized copies of their marriage certificate and their child's birth certificate.
台灣同胞若要替在大陸的「婚生子女」（注意：子女年齡不得超過十二歲，且非婚生子女免談！）申請來台灣，最重要的文件，一項是夫妻倆的結婚公證書，一項是小孩子的出生公證書。