However, the equatorial counterpart continues to slowly and monotonously decrease by ~20%, around 12000 s. This observation aligns with the evolution of the diffraction peaks and the ⍴ parameter shown in Fig. , indicating a continuous increase in the aspect ratio of the bassanite crystals (Fig. , stage III). This can be attributed to the slow dissolution of bassanite crystals, strongly supported by our in situ Raman spectroscopy data, which we will further discuss.