Founding ceremony, the historic founding day of New China.

In fact, this is really only determined by objective conditions, just like Mao Zedong and his country established the China Soviet in Ruijin. With the government, there is a center, and there is hope (just like the ancient soldiers had the object of loyalty-the emperor). And don't forget that you had the influence of the New Culture Movement and Marxism-Leninism at that time, so China's lunar calendar and those auspicious days were forgotten. And at that time, some southern provinces were still under the control of the Kuomintang, so the sooner the new China was established, the better. I hope it helps you.