为什么这么纯啊我的天……

{"result":[{"race_desc":"\u4e2d\u534e\u6c11\u65cf","race_en":"chinese_nation","race_probality":"0.999700","area":[{"block":"chinese_nation","race_desc":"\u5317\u65b9\u6c49\u65cf","race_en":"han_northern","race_probality":"0.999590"},{"block":"chinese_nation","race_desc":"\u5176\u4ed6","race_en":"other","race_probality":"0.0002"}]},{"race_desc":"\u5176\u4ed6","race_en":"other","race_probality":"0.0003","area":[]}],"case_id":"ANCESTRY","prefix":null,"description":"\u7956\u6e90\u5206\u6790","color":null,"detail_url":"\/report2\/ancestry\/"} 我妈是贵州省毕节市黔西县的汉族，我爸是北京市朝阳区的汉族，那也不至于这么纯吧，按理说我妈那边往上几代应该和苗族/彝族/纳西族通婚过啊……