The aim of conceptual DFT was clarified at a conference in Changsha City, China in 2018, attended by almost all of the most influential workers in the field, and formulated in the above mentioned status paper as "to develop a nonempirical, mathematically and physically sound, density-based, quantum-chemical theory for interpreting and predicting chemical phenomena , especially chemical reactions". This aim should be realized with a philosophy based on three fundamental precepts: observability (our understanding of chemical observations should be based on quantum-mechanical observables -in particular, the energy, the density and their derivatives); universality (the results should not depend on the type of calculations) and mathematical rigour (aiming at a well-defined mathematical framework).