Pancake rolled with green onions. Liu Yong is a character in the TV series "Prime Minister Liu Luo Guo". In the plot, the poor Liu Yong was unable to bring out any gold and silver treasures, so he creatively sent a large bucket of green onions, which was later named Pancake Rolled Green Onions. "Prime Minister Liu Luoguo" is a 40-episode large-scale Qing Dynasty costume series directed by Shi Ling, Zhang Zien, and Han Gang, and starring Li Baotian, Zhang Guoli, Wang Gang and other well-known film and television actors.