Why did Japan fail so terribly at invading China?

Same reason Germany failed against the SU, logistics and alienating any popular local support they might of had

They had actually extraordinary success, more than they had a right to expect.

China's a big country.

>>3198171
For you

>>3198118

They with a smaller force completely decimated China however the us interviened and they had pull troops to the Pacific theater allowing China to stalemate the front line

>>3198118
They shot themselves in their own foot, the worse part is, the KMT even offered surrender to the Japanese, but they were to autistic to accept, why, because they desperately wanted Chiang to resign from politic.
To not forget their assassination of Zhang Zuolin made it impossible for them to cooperate with any with any warlords in the future.
Reason why they failed was because they thought they needed to just capture Nanjing, they didn't expect the KMT to continue fighting, considering the Qing surrendered pretty easily after just a few cities captures.
>>3198193
The stalemate already began in 1939, when Japan could not push any further and began to actually lose the majority of the confrontations.

Because Tojo was an idiot. He and others got caught up in ethno nationalism. instead of coming in as liberators. You know "asia for asians", just under japanese dominance.

>>3198118
No central authority for all of China and the fact that they went full retarded with genocide mode.

Remember the Three is All Policy

>>3198171
then you got US which is also a big country taking them from the rear

and a third big country Russia assisting China

>>3198359
>The stalemate already began in 1939, when Japan could not push any further and began to actually lose the majority of the confrontations
can you link some battles?