数据区域代码出现重复

[boolw]

"710300": {
"710301": "仁爱区",
"710302": "信义区",
"710303": "中正区",
"710304": "暖暖区",
"710305": "安乐区",
"710307": "七堵区"
},
"710400": {
"710301": "中区",
"710302": "东区",
"710303": "南区",
"710304": "西区",
"710305": "北区",
"710306": "北屯区",
"710307": "西屯区",
"710308": "南屯区"
},

按规律下面部分应该是7104开头