Quark Matter - International Conference on Ultra-relativistic Nucleus-Nucleus Collisions is the largest conference on the topic of heavy-ion collisions and the quark-gluon plasma, medium created in such collisions. In 2019, it took place in Wuhan, China. STAR teams from FNSPE and NPI CAS were represented by 4 students and postdocs. Barbara Trzeciak was invited to give a talk titled Quenching of heavy and light flavor jets: experimental overview. Leszek Kosarzewski, Lukas Kramarik and Jan Vanek presented posters with the recent results from the STAR experiment at BNL.