What does the last banner of Watergate Bridge say?

Seven heroes of steel written on the last flag of Watergate Bridge.

At the end of the film Watergate Bridge, the soldiers of the Seventh Company reported to Song, commander of the Ninth Corps of Chinese people's Volunteer Army: "There should be 157 people in the Seventh Company, but there are actually 1 people!" At this time, a lens moved to a flagpole next to it that read "Hero of Steel 7"!