Were the 50s to 70s a break in the new literature of May 4th

Yes, the 1950s-70s are often viewed as a relatively independent literary period. However, descriptions of the nature and characteristics of this period sometimes vary greatly among different researchers. One representative view is that the mainland Chinese literature of these 30 years "reversed" the process of new literature initiated by the May Fourth Movement, and "fractured" the May Fourth literary tradition. The "May Fourth" literary tradition has been "broken", and it is only in the "New Period Literature" that this tradition has been continued.