Prof. Wojciech Cellary participated in the First Wielkopolska Economic Congress, which took place in Poznań and Piła from 17 to 18 September 2018. The organizer of the Congress was the Wielkopolska Chamber of Commerce and Industry and the Office of the Marshal of the Wielkopolska Region. On the first day of the congress took place in the Marshal Office premises in Poznań, and on the second day at the headquarters of the company DPS Gabionen in Piła. Prof. Cellary gave an ivited lecture in Poznan and Piła, entitled "Wielkopolska 4.0", as a part of panel discussion "Economic development of Wielkopolska - challenges".