What will be the punishment for returning to China after the Spanish visa expires?

One month after the visa expires is illegal detention. 1. If illegal residents are found, they will be forcibly repatriated and fined about 2000 yuan upon entry. If you return to China voluntarily, you can go through the necessary procedures. China's embassy and consulate in Spain went through the formalities of returning to China. There will be no punishment for returning home.