once i lamented to a researcher that how disappointing to find only negative result, no journal interested in publishing it, the researcher answered:

if it is there, it is there; if it not, it is not.

there is discussion that STEM field need to treat negative results more importantly so to avoid wasting time and resources.

ccp , realizing communism no longer attract youngs, now treat china history to such a high status that no negative stuff can be revealed, and positive ones encouraged even if it's at best dubious, at worst fiction