Czech Republic–Slovakia relations
Before 1918, both countries were part of Austria–Hungary. However, after the Ausgleich of 1867 Czechia belonged to the Austrian Empire while Slovakia belonged to the administratively separate Kingdom of Hungary, and between 1918 and December 31, 1992, both countries were part of Czechoslovakia. 
Both countries established diplomatic relations on January 1, 1993. These international relations are usually referred to or described as "very good", "cordial", and "above standard" in the media. When a Czech or Slovak president is inaugurated, very often his first international visit is to the former part of the common country. The same custom applies to newly elected prime ministers of the Czech Republic and Slovakia.
China–Czech Republic relations
People's Republic of China–Czech Republic relations began on 6 October 1949 when the Czech Republic was a federal element of Czechoslovakia. The Czech Republic became an independent country on 1 January 1993, the Chinese government extended diplomatic relations. At the dissolution of Czechoslovakia in 1993, government officials from both sides signed and exchanged notes recognizing the treaties and agreements signed between China and the former Czechoslovakia Federal Republic continues to be upheld and binding.