 Abstract ternary hydrides have been found to be an effective platform for exploring high-temperature superconductivity at relatively low pressures. In this study, the author successfully synthesized the HCP, LA, CE, H9-10 at 113 GPA with the initial LA per CE ratio close to 3 to 1. High-temperature superconductivity was observed at 176 K and 100 GPA with the extrapolated upper critical field HC-2-0 reaching 235 T. This is significantly higher than the binary LA H system, which exhibits a TC of 103 K at 78 GPA. Furthermore, the ternary LA CE H system has a much higher TC and HC-2-0 compared to the binary LA H system, indicating that the formation of the solid solution contributes not only to enhance stability but also to superior superconducting properties. These results suggest that better superconductors can be engineered in the new hydrides by large addition of alloy-forming elements. This article was authored by Wu Hao Chen, Shelly Huang, Dimitri V. Semonok, and others. We are article.tv, links in the description below.