Contributing in rational decision making in the agricultural field with the presentation entitled “R&D Performance Evaluation in the Chinese Food Manufacturing Industry Based on Dynamic DEA in the COVID-19 Era” by Shiping Mao, Marios Dominikos Kremantzis, Leonidas Sotirios Kyrgiakos and George Vlontzos in the conference International Conference of Data Envelopment Analysis which took place in University of Surrey, Guildford, UK on 4-6 September 2ο23. #DEA45 was a great event for the operational research community! Huge thanks to Ali Emrouznejad and Emmanuel Thanassoulis for the excellent organisation of this event! Many more to come!