This is the flag of the Czech Republic. The flag surface is composed of blue, white and red. The left side is a blue isosceles triangle, and the right side is the white and red trapezoids on upper and lower. It is displayed as CZ on some platform systems. It generally means the Czech Republic or within the Czech Republic, and its capital is Prague.
🇨🇿 is the Emoji of a country/region‘s flag, and its meaning is flag: Czechia. The Emoji 🇨🇿 is composed of two regional indicator letters, namely 🇨 and 🇿. The country/region's 2-letter code for Czechia is CZ, so the letters corresponding to the two region indicator letters are C and Z. 🇨🇿 is displayed as a whole flag on most platforms and as a two-letter symbol on a few platforms.