Festive parade on the bridge over the Yangzi river in Wuhan. The train is carrying a Mao portrait in front. The slogan right above it is about May 1, International Labour Day. A 'li' is approximately half a kilometer.
This is a 1963 impression of the poster published originally in 1960.
Designer Zhang Yuqing would later make a similar poster featuring the Yangzi River Bridge in Nanjing.

The locomotive carrying a Mao portrait.

In the parade, key industrial and agricultural products are shown off: coal, steel, grain, and cotton.