Comrade Hua left us ten monographs in his life: On the Prime Number, Calculation of Exponential Sum and Its Application in Number Theory, Harmonic Analysis of Typical Fields in the Theory of Functions with Multiple Complex Variables, Introduction to Number Theory, Typical Groups (co-authored with Wan Zhexian), Starting from the Unit Circle, Application of Number Theory in Approximate Analysis (co-authored with) and. Optimization Theory and Mathematical Theory for Optimizing the Scope of Planned Economy have been translated and published abroad, and some of them have been included in mathematical classics of this century.