This is a rare find of dinosaur remains preserved with its last meal.
Of the hundreds of skeletons of carnivorous dinosaurs discovered to date, only 20 cases retained traces of their last meals. This discovery made during a visit to museum collections in China brings their number to 21.
https://www.mcgill.ca/science/channels/news/other-paleo-diet-rare-discovery-dinosaur-remains-preserved-its-last-meal-344495
https://www.tandfonline.com/doi/full/10.1080/02724634.2022.2144337