The 3rd International Workshop on High-T_c Nickelate Superconductors was held at Fudan University in Shanghai from 5 to 7 December 2025. Qisi gave an invited talk entitled “Spin and orbital excitations of trilayer nickelates,” presenting our recent resonant inelastic X-ray scattering studies of La₄Ni₃O₁₀ and Pr₄Ni₃O₁₀. The results revealed distinct low-energy magnetic excitations and highlighted how dimensionality shapes the magnetic interactions relevant to nickelate superconductivity.