A topologically protected quantum dot can be used as a qubit in a quantum computer, so it is an area where researchers ' attention is focused. If a material having a topological electronic state has superconductivity together, it was expected that a quantum state that does not easily perturbation occurs by external factors in a magnetic defect or magnetic field will be implemented. Fe (Se, Te) is a material that satisfies the above-mentioned conditions, there have been studies that have observed the electronic structure having a specific quantum dot using a scanning tunneling microscope. However, in this study, the method using a superconducting probe to have a high energy resolution, the existing topological electronic structures reported in the past show that it is possible to control using the probe, reported the possibility that the existing interpretation is wrong. This presented a methodology for controlling local electronic structures induced by defects at the atomic level, and showed that more research is needed for the requirements for implementing quantum dots that are still topologically protected. In recognition of its importance in the experimental identification of topological electronic structures, it was recently published in Nature Communications, a global authority.