 The selection of official standards by family background gradually developed to the selection of talent , while the selection method by selection gradually developed to the form of public examination.
<clarity>  The selection of official standards by family background gradually developed to the selection of talent , while the selection method by selection gradually developed to the form of public examination.
 The standard of Official Selection by familial history gradually developed to the selection of talent , while the selection method by selection gradually developed to the form of public examination.