Lagrange has important applications in both mathematics and technology. Mathematically, the Lagrange interpolation method was proposed by the 18th-century mathematician Joseph-Louis Lagrange, constructing precise polynomials from known data points, widely used in numerical analysis and data fitting. Technologically, the Lagrange project is a modern cross-platform Gemini client, implemented in C language with the SDL library for efficient graphic rendering, supporting secure communication and personalized themes, providing users with a simple and smooth browsing experience. Both exemplify the scientific spirit and technological value of 'Lagrange' through innovation and practicality. #LagrangeLA and #LA , and mention the project account @Lagrange Official