When was the slogan "Better be dead than conquered people", and what historical situation did it reflect?

After the September 18th Incident, Song Yuan Zhe (1885-65438+1October 30th-65438+April 5th, 0940) was born in Laoling County, Shandong Province. On the third day after the September 18th Incident broke out, Song led all the officers and men of the 29th Army and the 5th Regiment, and sent a message to the whole country: "Yuan Zhe and others are soldiers, and their responsibility is to protect their families. I am willing to lead my people to stand by and watch. I would rather die like a ghost than be a conquered nation, struggle and sacrifice, and swear to avenge national humiliation.