Question: No Qin=Longer Surviving Rome?

[willbell]

Here is my logic, say Qin Dynasty China is destroyed or at least does not unite China, the Xiongnu do not get forced out by the Qin and Han Dynasties (who were butterflied). The Xiongnu staying butterflies the Huns (theoretically, I am aware this is a point of contention), which means no hunnic invasion of Europe, no tribal confederacies, and no major external threats to Rome?
Does my logic make any sense?

 

[LSCatilina]

Well, first you'll have still the inner crisis : provincial isolationism, economic crisis, agricultural crisis...

And, no Huns wouldn't butterfly away germanic threats : the III/IV period knew several germanic raids as far than Spain. Blame climatic changes and military unstability.

Now, it's true that no Huns could lead to a different V century.

Without a "common ennemy' germanic peoples could make Rome collapsing earlier if eastern germanic people still invade the empire; or if not, the western germanic people (and Vandals) will still overrun many provinces but WRE could survive in Italy, Dalmatia and/or Carthage.