On-chip integrated multicolor microlasers have been intensively studied owing to their practical applications ranging from miniaturized coherent light source, optical sensing, to visible light communication [1–7]. Compared with the combination of several microlasers, the white-light microlaser from a single nanomaterial is more attractive for on-chip integration [8–16]. In 2015, Fan et al. reported a monolithic white-light laser by parallelly combining ZnCdSSe-based segments into the same microcrystal . Soon after, multicolor microlasers were widely observed in various systems, e.g., -based quantum dots, luminescent polymers, organic dyes-doped polymer, and liquid crystals [9–14]. Despite the continuous success, these white-light microlasers are either simple compositions of parallel microlasers or generated by the reabsorption and the re-emission. From the point view of practical applications, these multicolor microlasers usually come from different locations and the eventual white colors are strongly dependent on the excitation density.