A chef prepares sliders at the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
Visitors try chicken products at the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
People watch the demonstration on how to hydroponically grow a variety of greens during the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
Visitors try food samples at the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
Chefs make steaks at the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
People visit the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
A woman grabs a dumpling from a robotic waiter at the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)
Staff members distribute food samples at the National Restaurant Association (NRA) Show in Chicago, the United States, May 22, 2022. The 2022 NRA Show is held from May 21 to 24 in Chicago. (Photo by Joel Lerner/Xinhua)