Search a Chinese city, district, area code, administrative code or postcode. The area-code table is open source; postcode records are a network-compiled public reference and should be checked before formal use.
Data source：Open-source area/postcode data: province-city-china and china-zipcode-data 区号使用 @province-city-china/district-code 8.5.8，邮编使用 @tombcato/china-zipcode-data 1.0.2；邮编为网络整理参考数据
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