In a paradigm-shifting article “More is different” in 1972, Phil Anderson pointed out that new properties can emerge from a many-body system, which cannot be derived from the constituent particles. In this talk I will illustrate that even two or three can be regarded as “more” in the world of superconductors. I will highlight the unnoticed beauty of multiband of iron-based superconductors, including 1. Emergence of topological band which coexists with superconductivity, leading to the discovery of Majorana zero mode; 2. Interplay of multicomponent superconductivity, leading to the discoveries of exotic paring with time-reversal symmetry breaking and fractional vortex; 3. Contribution of Hund coupling towards pairing in this unique class of superconductors.