 This paper discusses the effectiveness of adding NB and MO to a cosi-arpha and i-high entropy alloy to improve its strength. It also examines how annealing treatments can be used to control the formation of a new type of precipitate with a hexagonal close-pack structure which is semi-coherent with the matrix. This precipitate is tailored with a considerable quantity and fine size, resulting in improved mechanical properties such as yield strength, ultimate tensile strength, and elongation. Furthermore, the fracture mode of the annealed alloy is a mixture of cleavage and necking-featured ductile fracture. This article was authored by Rui Fan, Sikong Zhao, Lighting Wang, and others.