Recommended by the Heat and Mass Transfer Society of China, Prof Bingyang Cao served as Delegate of The Assembly for International Heat Transfer Conferences (AIHTC, http://www.aihtc.org/index.html). The Assembly for International Heat Transfer Conferences (AIHTC) organizes the series of quadrennial International Heat Transfer Conferences (IHTCs) – the Heat Transfer Olympics – since 1966. The origin of the IHTCs is an International Discussion on Heat Transfer held in London (Chair, O.A. Saunders) and Atlantic City (Chair, A.P. Colburn) 1951; this was regarded as IHTC-1. Ten years later, a succeeding International Heat Transfer Conference was held in Boulder 1961 and in London 1962, which was regarded as IHTC-2. After IHTC-3 held in Chicago 1966, IHTCs have been continuously held every four years having the recent one IHTC-16 held in Beijing 2018 followed by the next two in Cape Town 2022 and Rio de Janeiro 2026. It has been organized in 17 cities of 10 countries. For over 67 years, IHTC has been the largest worldwide forum on heat transfer (HT) and thermal science and engineering (TSE), and devoted to meet the scientific and social challenges as the thermal energy usage, environmental sustainability, material processing, bio-science, etc. The mission of IHTC has become more important with the rapid increase in the activity of human society.