Create a 'May Day Holiday' Promotional Poster Featuring Inner Mongolia & Jining International Leather City

I'm a corporate planner and I need help designing a promotional poster for the upcoming May Day holiday. The poster needs to highlight 'off-season sales' and feature two key elements: the Inner Mongolian grasslands and the Jining International Leather City. I'd like the poster design to be visually appealing and effectively communicate the message of the promotion.