“…Due to the strong spin-orbit coupling (SOC), compounds containing 5 d elements have gained increasing attention with the emergence of enormous exciting findings. Among the extensive collection of materials, iridates are particularly notable for being a rare playground that covers plenty of foremost research topics, such as frustrated magnetism, topological phases of matter, and superconductivity [1] , [2] , [3] , [4] , [5] , [6] , [7] , [8] . Pioneering works include those hunting for exotic magnetic states in complex lattice compounds, such as the hyper-kagome iridate Na 4 Ir 3 O 7 [9] .…”