忠孝聯邦共和國（英語：Chung Hsiao Federation Republic），通稱忠孝聯邦，現今多稱桃花民國，是位於東亞的聯邦共和國。該國宣稱領土包括東亞大陸平原、四川地區及臺灣島，目前實際控制範圍位於臺灣北部之土城、及板橋地區一帶。

截至2026年，忠孝聯邦共和國實際人口為2人，其宣稱領土之總人口約6億人。該國現為西芙和聯盟、國際總會、微國家國際足球協會及法斯靠聯合國等組織之成員。

The Chung Hsiao Federation Republic (English: Chung Hsiao Federation Republic), commonly known as the Chung Hsiao Federation and now more commonly referred to as the Taohua Republic, is a federal republic located in East Asia. The country claims territories including the East Asian Mainland Plain, the Sichuan region, and Taiwan Island, while it currently exercises actual control over areas of Tucheng, and Banqiao in northern Taiwan.

As of 2026, the Chung Hsiao Federation Republic has a population of 2, while the total population of its claimed territories is approximately 600 million. The country is currently a member of the Hopers Bloc, International Cultural Exchange Alliance, Micronational International Football Association, and Faskao United Nations.

國名：忠孝聯邦共和國

National Name：Chung-Hsiao Federation Republic

人口：2

Population：2

元首：鄭桃花

Head of State：Zheng,Tao-hua

幣制：新臺幣、新忠幣

Currency System：New Taiwan Dollar (NTD), New Chung-Hsiao Dollar

成立日期：2023/12/22

Date of Establishment：December 22, 2023

地理位置：臺灣北部

Geographical Location：Northern Taiwan

首都：清水市

Capital：Qingshui City

語言：華語、英語

Language：Mandarin, English

面積：不詳

Area：Unknown

國會：國民大會

Parliament：National Assembly

政治制度：藍色社會主義制、六權主義制、社會民主主義制、聯邦立憲制

Political System：Blue Socialism, Six-Power System, Social Democracy, Federal Constitutionalism

內閣：行政院、轄務院

Cabinet：Executive Yuan, Administrative Affairs Yuan

司法機關：法務院司法部

Judicial Authority：Ministry of Justice, Judicial Yuan

全銜：華陽聯邦民主共和國駐忠孝聯邦共和國大使館

Official Name：Embassy of the Federal Democratic Republic of Huayang to the Chung Hsiao Federation Republic

館址：忠孝聯邦共和國DC伺服器大使館區域

Mission Address：Chung Hsiao Federation Republic DC Server Embassy District

代表：蔣華平

Representative：Chiang, Hua-Ping

領務轄區：忠孝全境

Consular District：Throughout the Chung Hsiao Federation Republic

服務時間：10:00-21:00 (GMT+8)

Service Time：10:00-21:00 (GMT+8)

時差：與我國無時差

Time Difference：No time difference with Huayang

其他館務：暫無

Other Mission Affairs：None at Present